Insurance · Deep dive

W. R. Berkley Corporation

$26B-market-cap, 59-year-old specialty commercial P&C compounder run as a federation of ~60 decentralized operating units, printing an 89.4% Q4 2025 combined ratio and 21.2% ROE on $14.7B FY2025 revenue — the archetypal well-run incumbent whose founder-family control, disciplined underwriting culture and E&S/professional-liability tilt have produced 25 consecutive years of dividend growth even as the specialty market softens back toward 2020 rate levels.

well positioned

A founder-family-controlled ~60-unit specialty commercial P&C federation printing an 89.4% Q4 2025 combined ratio and 21.2% ROE, with a $33.2B invested-asset flywheel and a decentralized underwriting culture that competitors have failed for six decades to copy, structurally compounds through the current soft market.

My take ★★ Very interesting ★ Interesting − Maybe ✗ Not interesting

Snapshot

W.R. Berkley Corporation is a ~$26B market-cap, founder-family-controlled specialty commercial P&C compounder run as a federation of roughly 60 decentralized operating units — each a P&L-accountable specialty carrier for one niche (excess casualty, professional liability, environmental, entertainment & sports, cyber, aviation, workers’ comp, transportation, surety, high-net-worth personal lines) — sitting under a parent that supplies capital, reinsurance, investment management and centralized actuarial/legal support. FY2025 delivered $14.7B of total revenue (+7.8%), $1.78B of net income, $4.48 of EPS and a 21.2% return on beginning-of-year equity, on an 89.4% Q4 combined ratio and a record $33.2B invested-asset portfolio (WRB 8-K, 26 January 2026). The single most important fact about Berkley is that the model — 60 operating units with local underwriting authority, cycle-managed capital deployment and 25 consecutive years of dividend growth — has now survived the death of its 79-year-old founder on 9 June 2026 and a $3.8B March 2026 stake acquisition by Mitsui Sumitomo without visible operational disruption.

Founding story

W.R. Berkley Corporation is the personal creation of William R. Berkley — a New Jersey kid whose father died in a plane crash when he was 11, who started buying stocks at age 12 with lawn-mowing money, graduated NYU Stern in 1966, and while at Harvard Business School ran a ~$2M mutual fund with classmate Paul Dean out of a Cambridge apartment. He founded W.R. Berkley Corporation in 1967 at age 21 while still in HBS. It began as an investment-management partnership and pivoted into insurance.

The early acquisitions defined the model: Houston General Insurance in 1972 for a commercial-carrier base, Admiral Insurance in 1979 as the anchor of the excess-and-surplus lines franchise. Through the 1980s and 1990s Berkley added operating units one at a time — each a specialty class of business with a local president, local underwriters, local claims staff, and local P&L accountability. In December 1995 Berkley took Signet Star Holdings from 60% to 100% (via ~$68.8M of preferred stock issued to General Re), later restructured its reinsurance business around excess-of-loss and renamed the entity Berkley Insurance. That is the leg that today is the Reinsurance & Monoline Excess segment.

William R. Berkley served as CEO for 48 years until 1 October 2015, when his son W. Robert Berkley Jr. — Georgetown alum, ex-Merrill corporate finance, joined the company in 1997, worked through specialty operations and then President & COO from November 2009 — took the CEO seat. William stayed on as Executive Chairman until his death on 9 June 2026 at age 79. Robert Jr. was elected Chairman the next day. The transition, prepared for over a decade, is the reason the market barely blinked.

How it works

W.R. Berkley is deliberately not run as one carrier. It is roughly 60 individual insurance and reinsurance operating units, each treated as a stand-alone specialty franchise. Each unit has:

• Its own president and its own underwriting authority within class and territory
• Its own broker and agent relationships
• Direct P&L accountability tied to a compensation model that rewards underwriting profit, not premium volume
• A specific niche — one class of business, one geography or one distribution channel — chosen because it requires deep technical knowledge that a national generalist cannot easily reproduce

The parent, in Greenwich, CT, supplies four things: capital (via consolidated balance sheet and rating), investment management ($33.2B invested assets at YE2025, ~2.4-year fixed-maturity duration), reinsurance procurement, and centralized services (enterprise actuarial, legal, IT, ERM). Everything else is decentralized. The March 2025 Insurance Business coverage of two specialty units being merged called it “unusual for a company built on keeping them apart” — the exception that shows how deep the norm is.

Reporting segments consolidate the 60 units into just two: Insurance (US and international specialty and admitted primary; the bulk of the company; $3.1B Q2 2026 NPW) and Reinsurance & Monoline Excess ($306M Q2 2026 NPW, currently shrinking because casualty reinsurance rates are, in Robert Berkley Jr.’s own Q2 2026 commentary, “sluggish”).

Two features of the model matter economically. First, decentralization lets a new operating unit be spun up quickly when a hard market opens a niche — Berkley Specialty Excess (May 2023) and Berkley Prime Transportation (2019) are examples. Second, when a unit becomes too large or too diversified for one leader, it is split into two — Berkley Entertainment & Sports and Berkley Environmental were separated out of Berkley Specialty Underwriting Managers in June 2017.

Product and business overview

The Insurance segment writes across the specialty commercial spectrum, all through wholesale brokers and independent retail agents:

• Excess & Surplus lines via Admiral Insurance, Nautilus, Berkley Specialty Underwriting Managers, Vela and other units — the E&S market wrote $105.31B of US direct premium in 2025 and Berkley is a top-10 writer.
• Professional liability — D&O, E&O, lawyers, accountants — through Berkley Professional Liability, Berkley Select, Monitor Liability Managers, and others.
• Commercial transportation — long-haul trucking, taxi/limo, public livery — through Berkley Prime Transportation and other units.
• Environmental through Berkley Environmental — customized environmental risk for contractors, landfills, recycling and manufacturing.
• Workers’ compensation — several regional workers’ comp specialists (Berkley Industrial Comp, Continental Western, etc.), the class of business that has been the most profitable line in commercial P&C the past decade.
• Cyber / Tech E&O — a smaller offering competing with Coalition and At-Bay.
• Entertainment & sports — Berkley Entertainment & Sports, one of the most defensible niches Berkley owns (professional sports teams, event coverage).
• High-net-worth personal — Berkley One, launched to compete with Chubb Masterpiece and PURE; led by Kathy Tierney, former COO of Chubb personal insurance; writes in ~29 states.

The Reinsurance & Monoline Excess segment (Berkley Insurance) writes facultative and treaty reinsurance globally plus monoline excess casualty. Currently in retrenchment mode as pricing softens.

Business model and pricing

Berkley books revenue as net earned premium as policies age. Underwriting profit = premiums earned – losses & LAE – underwriting expenses; combined ratio is the ratio of those cost lines to premiums earned. The company’s stated cycle target is a combined ratio in the low 90s across all conditions; the actual print in 2024 was 90.3% and in Q4 2025 was 89.4%, with Q2 2026 accident-year ex-cat at 88.1%.

Underwriting profit is amplified by investment float. Berkley invests ~$33.2B (YE2025), heavily concentrated in short-duration high-quality fixed maturity (average duration ~2.4 years at YE2023) plus meaningful allocations to equities, merger arbitrage, investment funds, private equity, loans and real-estate-related assets. The short duration was a deliberate choice going into the 2022-2023 rate-hiking cycle; it produced $1.3B of NII in FY2024 (+26.6% Y/Y) and a record $418.7M in Q2 2026 alone as rolling maturities repriced into higher yields.

Capital return: the company hit its 25th consecutive year of dividend growth in 2026 (dividend +11.1%) with $1.86 current annual dividend and a ~2.89% yield. Alongside the regular dividend, Berkley paid three 50-cent special cash dividends in 2024 — a pattern of returning excess capital when book value has grown faster than growth-of-book-of-business opportunities warrant. The June 2024 3-for-2 stock split (effective 10 July 2024, taking the price from ~$79.63 to ~$51.49) was a signaling exercise, not a capital event.

Traction over time

*Reflects three 50¢ special dividends in 2024 plus regulars; regular annual rate now $1.86 (post-Feb 2026 raise). Sources: WRB 8-Ks (2020-2025), FY2024 press release 27 January 2025, FY2025 press release 26 January 2026, Macrotrends, GuruFocus.

The pattern is a genuinely differentiated combined-ratio profile — Berkley printed sub-91% in every year of a period when the US industry combined ratio ran 96-103%. It is that gap, compounded across a growing float, that has produced the 20-plus-year record of book-value-per-share compounding and made Berkley a favored comp in every property-casualty sell-side deck.

Market analysis

The US property-casualty industry wrote roughly $1T of direct premium in 2025; specialty commercial is where Berkley plays. Two data points scale the specialty market and its dynamics:

• E&S direct premium hit $105.31B in 2025 (+7.8%) — the first time above $100B, per S&P Global Market Intelligence. E&S has grown from ~$40B in 2014 to $105B+ in 2025 (a 2.5x expansion in a decade), capturing an estimated 35 cents of every dollar of commercial P&C premium. That trend of admitted carriers ceding complex risks into E&S is the structural tailwind under Berkley’s biggest business.
• The specialty market has softened faster than expected in 2025-2026 — WTW’s Specialty Insurance Marketplace Survey (May 2026) reported a 10-point decline in its rate index at the January 2026 renewals, taking pricing back to 2020 levels; 75% of 42 tracked classes showed rate decreases at 1/1/2026 vs. 30% in 2024. Approximately half of the 2017-2023 cumulative ~45% hard-market rate increase has already been given back.

Other structural forces to weigh:

• Social inflation — jury awards, plaintiffs’ bar aggression on nuclear verdicts, and settlement severity on excess casualty and D&O have driven the industry’s largest reserve reopens; Berkley has taken adverse development on 2016-2019 accident years in commercial liability, D&O, lawyers professional liability and E&S casualty.
• Reinsurance repricing — after 2022-2023 reinsurance hardening, primary retentions rose; 2025-2026 is now the mirror image, softening back and squeezing carriers with weak retentions.
• Berkshire, PE, Bermuda and Lloyd’s capacity — E&S has been the fastest-growing pool of new capacity; Kinsale, Palomar, Skyward, and Hiscox all built specialty franchises through the last cycle.
• Wholesale broker consolidation — Amwins, RT Specialty (Ryan) and CRC Group control the wholesale distribution that ~85% of E&S business flows through. A specialty carrier’s access to those three firms is now as important as its capital.

Competitive intel

Chubb is the head-on structural rival — larger, more international, more diversified, competes on virtually every Berkley class. Chubb Masterpiece is the direct competitor for Berkley One’s HNW ambition; Chubb E&S / commercial specialty competes for the same primary risks.

Kinsale Capital (~$8B market cap, 2026) is the most acute new-generation E&S threat: pure-play, digital submission platform, low expense ratio, and combined ratios in the 70s during 2022-2024. Kinsale has taken share from Berkley in small-account E&S where speed-to-quote matters more than technical depth.

Markel Group (~$25B market cap) is the closest philosophical comp — specialty commercial + investment operating platform, patient capital, similar culture, but a more diversified non-insurance operating conglomerate. Not a share-taker but a valuation comp for public-market investors.

Everest, Arch, RLI compete class-by-class in specialty and reinsurance; RLI is the smallest and most Berkley-like in cycle discipline. Everest has taken over some casualty reinsurance business Berkley has stepped away from at the current rate.

Berkshire Hathaway Specialty is the structural long-run threat because its cost of capital is zero and Ajit Jain’s underwriting franchise deliberately writes the risks other specialty carriers cannot. Warren Buffett has repeatedly praised Berkley publicly — but BHS is nonetheless the carrier best positioned to take Berkley’s biggest accounts if it chose.

Coalition ($5B, October 2024) and At-Bay attack Berkley Cyber from the specialty tech-enabled MGA angle. Berkley’s cyber offering is a smaller internal unit competing with better-funded pure-plays.

Newfront ($1.45B, sold to WTW December 2025) is the demand-side threat — the wholesale/retail broker tech consolidator that could shift where Berkley’s submissions come from.

History and evolution

• 1967 — William R. Berkley (21, at Harvard Business School) founds W.R. Berkley Corporation.
• 1972 — Acquires Houston General Insurance.
• 1979 — Acquires Admiral Insurance — the E&S anchor.
• 28 December 1995 — Takes Signet Star Holdings to 100% for $68.8M preferred consideration to General Re; subsequently renamed Berkley Insurance.
• 2000s — Steady operating-unit build-out; ~40 units by 2010.
• 1 October 2015 — Founder William R. Berkley steps down as CEO after 48 years; son W. Robert Berkley Jr. becomes President & CEO; William becomes Executive Chairman.
• June 2017 — Berkley Entertainment & Sports and Berkley Environmental established as independent operating units.
• 2018 — Berkley Healthcare formed; Berkley Select + Monitor Liability Managers merged.
• 2019 — Berkley Prime Transportation launched.
• 2020-2021 — COVID; combined ratio holds at 90.9%/89.6%; digital submission acceleration.
• May 2023 — Berkley Specialty Excess formed as a monoline excess-liability response to hard-market casualty demand.
• 12 June 2024 — 9.1% regular dividend hike, 50¢ special dividend, 3-for-2 stock split (effective 10 July 2024).
• September / December 2024 — Second and third 50¢ special dividends of 2024.
• 27 January 2025 — FY2024 8-K: $12.0B NPW, $1.8B net income, 23.6% ROE, 90.3% combined ratio.
• 11 March 2025 — Mitsui Sumitomo (MS&AD) announces intent to acquire ~15% stake in WRB; Berkley family retains shares and enters voting agreement.
• 26 January 2026 — FY2025 8-K: $14.7B revenue, $1.78B net income, 21.2% ROE.
• March 2026 — MSI completes ~$3.8B / 15.7% stake, files SCHEDULE 13D/A, designates Andrew Carrier to board.
• 9 June 2026 — Founder William R. Berkley dies at 79.
• 10 June 2026 — W. Robert Berkley Jr. elected Chairman.
• 20 July 2026 — Q2 2026 8-K: $452M net income (+12.7%), 20.5% annualized ROE, 88.1% accident-year combined ratio ex-cat, $418.7M record NII, book value $26.53/share.

What people say

The case for. Sell-side coverage broadly reads Berkley as the reference specialty commercial P&C compounder. Truist raised its price target to $83 with a Buy rating after Q2 2026; Wells Fargo raised its target to $70 (Overweight in one 2025 initiation, later Underweight at the July 2026 rating change — see complaints). The Q2 2026 print — 88.1% accident-year ex-cat combined ratio, 20.5% annualized ROE, record NII — reads as validation that the model still compounds through softening rates. The Mitsui Sumitomo $3.8B stake at ~book multiple represents third-party endorsement from a top-five global insurer with a specific view on Berkley’s underwriting franchise. Buffett’s repeated public praise of Berkley as one of the industry’s best underwriters is the closest thing to a permanent institutional bid. Berkley One is one of the two credible new entrants against Chubb Masterpiece in high-net-worth homeowners, with founder-family-scale patient capital that PURE and Vault have struggled to match. The 25 consecutive years of dividend growth (2026 hike +11.1%) is a public commitment discipline that only a family-controlled underwriter can plausibly sustain.

The complaints. The uncomfortable part is a combination of price, reserves and softening. First, valuation: at ~$26B market cap versus $26.53 book, Berkley trades at ~2.6x book — near the high end of the specialty-P&C peer group — meaning the model has to keep printing 20%+ ROE to justify current price. Second, reserves: Jefferies has flagged concerns about $485M of adverse development on prior-year reserves, and Keefe, Bruyette & Woods flagged an $834M statutory loss-reserve deficiency, with the biggest concentration in 2016-2019 accident-year other-liability, commercial multi-peril, commercial auto, D&O, lawyers professional and E&S casualty — precisely the long-tail classes that produce the return in a favorable social-inflation environment and destroy it in an unfavorable one. Third, softening: WTW’s 10-point rate-index decline through January 2026 renewals implies specialty rate adequacy has fallen to 2020 levels, and Berkley’s own Reinsurance & Monoline Excess segment is deliberately shrinking (~15%) because casualty reinsurance is not clearing at the CEO’s target margins. Fourth, employee sentiment: Glassdoor’s 3.6/5 rating (341 reviews, 55% recommend) is below Travelers’ 4.2/5, and culture-and-values scores are down 11% Y/Y as of September 2026. Indeed reviews reference “mass layoffs” at select operating units and Glassdoor themes cluster on “extremely kind and welcoming” on the positive side and “current culture feels driven by greed and micromanagement” on the negative — a two-track culture picture consistent with a federation where quality varies by operating unit. Fifth, founder-succession risk: W. Robert Berkley Jr. has been CEO since 2015 and Chairman only since 10 June 2026; the founder shadow is still fresh.

Outlook: well positioned or at risk?

Well-positioned. The single structural fact that decides this call is the decentralized 60-unit model. Every serious attempt to duplicate it has failed. Markel Group is the closest analogue and is materially smaller in specialty premium; Berkshire Hathaway Specialty is bigger in capital but centralized; the E&S insurtechs (Coalition, Kinsale, At-Bay) are class-specific and lack the reinsurance-plus-investment flywheel. Berkley’s advantage is not any single product — it is the compounding of 60 specialty franchises, each optimizing its own class, each disciplined enough to shrink when rates go bad (see the current 15% shrink in casualty reinsurance) and each capable of spinning off subsidiaries when they get too big. That structure has produced 25 consecutive years of dividend growth, sub-91% combined ratios in every year of the past six, and a ~20%+ ROE clip across the cycle.

Three additional protections. First, the founder-family control plus the Mitsui Sumitomo voting agreement and 15.7% stake make hostile M&A economically implausible and lock in the culture at exactly the transition point most likely to disrupt it. Second, $33.2B of invested assets at ~2.4-year duration means the NII flywheel is only just starting — rolling maturities will keep repricing into higher yields for another 12-18 months, adding to underwriting profit. Third, the E&S structural tailwind — $40B in 2014 to $105B in 2025 direct premium — is not obviously reversing even in a soft primary market.

The three risks that could flip the call. First, a large adverse reserve development event across 2016-2019 casualty accident years — KBW’s $834M statutory deficiency estimate is the number to watch and the earnings hit would compound with a soft-market rate environment. Second, discontinuous rate collapse — if WTW’s 10-point decline continues into 2027, specialty rate adequacy could drop below Berkley’s underwriting break-even on newer accident years. Third, founder-succession execution — Robert Berkley Jr. has the CEO history but sole authority is new; any misstep on capital allocation, operating-unit governance or Mitsui Sumitomo integration would immediately invert the “family compounder” thesis.

Absent one of those, the model is doing what it was designed to do.

How to attack it

Do not attack W.R. Berkley on scaled multi-class specialty commercial. That is exactly what 60 operating units are optimized for; frontal assault is what Chubb and Berkshire Specialty spend billions trying. Attack the seams.

Wedge 1: Vertical MGA on one class of specialty where Berkley’s operating unit has a technical or distribution gap. Coalition ($5B, 2024) proved the pattern in cyber: build the MGA-plus-active-services flywheel, tie premium to continuous telemetry, and hit a specific specialty class where the incumbent’s product is a coverage form but the buyer wants a service. A well-funded seed team could take the same playbook to: (i) transactional risk (M&A reps & warranties, tax indemnity) built on structured-data due-diligence platforms, (ii) EPL for AI-enabled workforces where liability triggers change quickly, (iii) professional liability for AI-native industries (design tools, legal automation, biotech CROs) where Berkley Professional and Berkley Select have limited product depth. The buyer values the technical layer; the reinsurer supplies paper capacity; the MGA captures the underwriting economics.

Wedge 2: Wholesale-broker submission and quote automation. Berkley’s distribution goes through Amwins, RT and CRC. Those three firms process hundreds of thousands of submissions a year across dozens of specialty carriers, and the submission-to-quote workflow is still email + Excel + PDF binder + phone. A purpose-built specialty submission-and-quote-to-bind platform for the top wholesalers — with structured schemas by class of business, automated triage, comparative quoting across Berkley/Kinsale/Skyward/Ambridge — would shift where submissions end up. The unit economics: each 100 basis points of hit-rate improvement on a $50B pool of wholesale premium is a real revenue base. Once the wholesalers standardize on the platform, the specialty carrier’s advantage shifts from “we know Amwins” to “we quote fastest at target combined.”

Wedge 3: Vertical E&S carrier for one geography where Berkley’s regional coverage is thin. Kinsale did this in the small-account E&S segment. A new entrant could target E&S personal or commercial in Florida / California / Louisiana / Texas cat-exposed geographies where admitted markets are non-renewing and Berkley’s presence is national but not local.

Enumerated Berkley weaknesses. (i) Cyber and tech E&O — internal build competing with best-of-breed pure-plays. (ii) 2016-2019 casualty reserve exposure per KBW ($834M) and Jefferies ($485M) analyses. (iii) Reinsurance & Monoline Excess segment shrinking on soft casualty reinsurance rates. (iv) Valuation at ~2.6x book has minimal margin for error. (v) Glassdoor 3.6/5 with culture down 11% Y/Y hints at operating-unit-level friction that a decentralized model can hide from the parent. (vi) Berkley One HNW at ~29 states versus Chubb Masterpiece’s national scale. (vii) Founder-succession risk is fresh. (viii) Wholesale-broker channel dependence is structural — a broker-tech shift benefits attackers.

Adjacent-segment play

The most attractive adjacent play built on Berkley-shaped assets is a specialty-carrier-in-a-box platform sold to global multi-line insurers who want to replicate the decentralized model without the six decades of build. Mitsui Sumitomo’s $3.8B for 15.7% is, at core, a bet that MSI cannot itself construct 60 operating units through internal effort. Zurich, AXA, Sompo, Tokio Marine, Fairfax, and every large multi-line insurer with a US specialty ambition is in the same position. A platform that provided (i) operating-unit governance templates, (ii) actuarial and IT shared services, (iii) capital-allocation and reinsurance procurement optimization, and (iv) an underwriter-compensation architecture aligned to combined ratio rather than premium volume, could sell into 10-15 global buyers as SaaS or license fee. Reference: Guidewire’s ~$25B market cap monetizes a much narrower slice (core policy admin), and the operating-model layer above policy admin is unbuilt.

A second adjacent is Berkley-branded direct-to-SME specialty via API — commercial workers’ comp, EPL, cyber and general liability embedded in payroll (Gusto, Rippling), banking (Mercury, Brex), and vertical SaaS (ServiceTitan, Toast). Coterie Insurance and Vouch have prototyped this; Berkley has scale and paper capacity Coterie cannot match. The API layer bypasses the wholesale-broker channel entirely for the smallest specialty risks where the broker economics are marginal anyway. This is the class of risk Kinsale already serves digitally — Berkley could either build or partner and capture volume that would otherwise leak to Kinsale.

A third adjacent is Berkley Investment Advisers as an outsourced float-manager for smaller mutual and reciprocal insurers. WRB manages $33B at low expense ratio with 2.4-year duration matched against P&C liabilities. Farmer-owned mutuals, physician-mutuals and reciprocal insurers with $500M-$5B floats often lack the scale to run internal fixed-income teams; White Mountains, Enstar and Loews have all monetized adjacent versions.

Sources and further reading

• W. R. Berkley Corporation Reports Fourth Quarter and Full Year 2024 Results — WRB IR, 27 January 2025.
• W. R. Berkley Corporation Reports Fourth Quarter and Full Year 2025 Results — BusinessWire, 26 January 2026.
• W. R. Berkley Corporation Reports Second Quarter 2026 Results — BusinessWire, 20 July 2026.
• W. R. Berkley Corporation Declares Special Dividend, Increases Regular Quarterly Cash Dividend 9.1% and Announces 3-For-2 Stock Split — WRB IR, 12 June 2024.
• Mitsui Sumitomo Completes $3.8 Billion Berkley Stake Acquisition — AM Best, March 2026.
• 15% of WR Berkeley Shares to Be Acquired by Mitsui Sumitomo Insurance — Insurance Journal, 28 March 2025.
• Specialty Insurance Rates Soften Faster Than Expected, Hitting 2020 Price Levels: WTW — Insurance Journal, 18 May 2026.
• US Excess and Surplus Market Growth Slows to Single Digits as Commercial Property Premiums Decline — Risk & Insurance, 2026.
• W. R. Berkley — SEC Form 10-K, FY2024 — SEC EDGAR, February 2025.
• W. R. Berkley — SEC Form 10-K, FY2025 — SEC EDGAR, February 2026.
• W. R. Berkley — DEF 14A 2026 Proxy Statement — SEC EDGAR, April 2026.
• Jefferies reiterates W.R. Berkley stock rating amid reserve concerns — Investing.com, 2025.
• W. R. Berkley Reviews (341) — Glassdoor — Glassdoor, 2026.
• W. R. Berkley CEO bemoans sluggish casualty reinsurance market as book shrinks 15% — Reinsurance News, 2026.
• William Robert Berkley — Horatio Alger Association — Horatio Alger Association.
• W. R. Berkley Corporation — Wikipedia — Wikipedia.