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Home›13F Funds›Pentwater Capital Management
13F portfolio · as of 2026-03-31 (Q1 2026) · filed 2026-05-15

Pentwater Capital Management· Matthew Halbower

Matthew Halbower's event-driven fund - merger arbitrage and special situations expressed through equities.

Reported book
$14.1B
Positions
92
Vs prior quarter
46 new · 15 exited
Top-10 weight
71%
Effective positions
13
Largest position
19%
Names we rate BUY
7

Sector allocationby reported value · GICS

  • Unclassified31%
  • Communication Services31%
  • Industrials24%
  • Consumer Staples6%
  • Information Technology4%
  • Health Care1%
  • Other3%
Biggest new buy
MASI
4.0% of book
Biggest add
EA
+17% shares
Biggest exit
CYBERARK SOFTWARE LTD
was $1.53B

Names we rate BUY in this bookour independent SEC-grounded verdict

  • NFLXBuy2%
  • TXNMBuy1%
  • WBSBuy1%
  • PSKYBuy0%
  • HCABuy0%
  • THCBuy0%
  • RDDTBuy0%

Holdings

Pentwater Capital Management latest 13F holdings with our verdicts
#HoldingOur call% of bookValueSharesQoQ
1EAELECTRONIC ARTS INC.Sell18.6%$2.61B12.8MAdded+17%
2SPYSTATE STR SPDR S&P 500 ETF TPut——$1.96B3.01MAdded+32%
3BABOEING COHold10.0%$1.41B7.07MAdded+7%
4WBDWarner Bros. Discovery, Inc.Hold9.8%$1.38B50.2MAdded+9%
5CARAVIS BUDGET GROUP, INC.Avoid7.3%$1.03B7.05MAdded+127%
6BABOEING COPutHold—$1.00B5.04MTrimmed-8%
7NSCNORFOLK SOUTHERN CORPHold6.6%$924M3.22MAdded+7%
8KVUEKenvue Inc.Hold6.4%$896M52.0MTrimmed-8%
9UNHUNITEDHEALTH GROUP INCCallSell—$768M2.84M—
10MASIMASIMO CORP—4.0%$565M3.18MNEW
11SPYSTATE STR SPDR S&P 500 ETF T—2.7%$377M580KAdded+5700%
12CORZCore Scientific, Inc./txAvoid2.6%$372M24.9MTrimmed-3%
13TECKTECK RESOURCES LTD—2.6%$360M6.96MAdded+7%
14HOLOGIC INC—2.4%$340M4.50MAdded+6%
15ARCELLX INC—2.3%$330M2.87MNEW
16CNTACENTESSA PHARMACEUTICALS PLC—2.3%$325M8.17MNEW
17NFLXNETFLIX INCPutBuy—$323M3.36MAdded+833%
18NFLXNETFLIX INCBuy2.1%$297M3.09MAdded+865%
19SATSECHOSTAR CORP—2.0%$276M2.36MAdded+232%
20CWANCLEARWATER ANALYTICS HLDGS I—1.9%$269M11.4MAdded+338%
21APELLIS PHARMACEUTICALS INC—1.5%$211M5.25MNEW
22AMICUS THERAPEUTIC—1.4%$202M14.0MAdded+22%
23DBRGDIGITALBRIDGE GROUP INC—1.3%$181M11.8MAdded+2%
24UNHUNITEDHEALTH GROUP INCPutSell—$175M645KNEW
25TXNMTXNM ENERGY INCBuy1.2%$164M2.80MAdded+70%
26GEO GROUP INC—1.1%$161M9.56MAdded+64%
27CARNIVAL CORP—1.1%$157M6.06MAdded+39%
28AIR LEASE CORP—1.1%$156M2.40MAdded+7%
29SGRYSURGERY PARTNERS INC—1.1%$151M12.7MAdded+27%
30UNHUNITEDHEALTH GROUP INCSell1.0%$139M512KAdded+30%
31WBDWarner Bros. Discovery, Inc.PutHold—$134M4.87MAdded+38%
32WBSWEBSTER FINANCIAL CORPBuy0.9%$130M1.87MNEW
33LBRDKLIBERTY BROADBAND CORP—0.9%$125M2.49M—
34NFLXNETFLIX INCCallBuy—$123M1.28MAdded+924%
35CARAVIS BUDGET GROUP, INC.CallAvoid—$113M776KAdded+1008%
36SLABSILICON LABORATORIES INC.Hold0.7%$104M500KNEW
37QQQINVESCO QQQ TRPut——$98.1M170KNEW
38CORZCore Scientific, Inc./txPutAvoid—$86.8M5.80MAdded+314%
39CARNIVAL CORPPut——$82.2M3.17MAdded+20%
40CZRCaesars Entertainment, Inc.Hold0.5%$70.0M2.65MNEW
41KVUEKenvue Inc.CallHold—$53.4M3.10MTrimmed-24%
42UALUnited Airlines Holdings, Inc.PutHold—$48.8M530KNEW
43CORZCore Scientific, Inc./txCallAvoid—$47.9M3.20MAdded+38%
44UALUnited Airlines Holdings, Inc.Hold0.3%$46.0M500KNEW
45ONESTREAM INC—0.3%$45.4M1.89MNEW
46PSKYParamount Skydance CorpBuy0.3%$37.0M4.10MAdded+19%
47HCAHCA Healthcare, Inc.Buy0.3%$35.5M75.0KNEW
48QQQINVESCO QQQ TR—0.2%$34.6M60.0KNEW
49PSKYParamount Skydance CorpPutBuy—$33.4M3.70M—
50NSCNORFOLK SOUTHERN CORPPutHold—$29.6M103KNEW
51KVUEKenvue Inc.PutHold—$25.9M1.50MTrimmed-80%
52PNFPPinnacle Financial Partners, Inc.Hold0.2%$25.8M300KNEW
53THCTENET HEALTHCARE CORPBuy0.2%$23.6M125KNEW
54ORCLORACLE CORPHold0.2%$22.8M155KNEW
55EWUISHARES TRPut——$22.8M500KNEW
56DAY ONE BIOPHARMACEUTICALS I—0.1%$17.2M800KNEW
57SATSECHOSTAR CORPPut——$14.0M120KAdded+20%
58CARNIVAL CORPCall——$12.9M500KNEW
59EWGISHARES INCPut——$11.9M300KNEW
60GPCRSTRUCTURE THERAPEUTICS INC—0.1%$11.8M245KNEW
61CHTRCHARTER COMMUNICATIONS, INC. /MO/PutBuy—$10.8M50.0K—
62ORCLORACLE CORPPutHold—$10.3M70.0KNEW
63BABOEING COCallHold—$9.95M50.0KNEW
64AMCAMC ENTMT HLDGS INC—0.1%$9.18M9.37MNEW
65LBRDALIBERTY BROADBAND CORP—0.1%$8.54M170K—
66RNAATRIUM THERAPEUTICS INC—0.1%$8.06M603KNEW
67KWEBKRANESHARES TRUST—0.1%$7.11M250KNEW
68AESAES CORPHold0.1%$7.04M500KNEW
69SATSECHOSTAR CORPCall——$5.85M50.0KNEW
70FPSFORGENT POWER SOLUTIONS INC—0.0%$4.68M160KNEW
71GDXVANECK ETF TRUSTPut——$4.59M50.0KNEW
72UPSUNITED PARCEL SERVICE INCHold0.0%$4.43M45.0KNEW
73SPYSTATE STR SPDR S&P 500 ETF TCall——$3.25M5.00KNEW
74DCHDAUCH CORP—0.0%$3.08M520KNEW
75COPXGLOBAL X FDSPut——$2.86M37.5KNEW
76MDLNMedline Inc.Hold0.0%$2.23M50.0KNEW
77CANTALOUPE INC—0.0%$2.16M200KNEW
78PRTCYPURETECH HEALTH PLC—0.0%$1.04M70.0K—
79CXWCORECIVIC INC—0.0%$946K50.0KNEW
80ATLANTA BRAVES HLDGS INC—0.0%$854K20.0KTrimmed-78%
81GEO GROUP INCCall——$841K50.0KNEW
82ENTREPRENEURSHARES SERIES TR—0.0%$777K46.0KNEW
83CRWVCoreWeave, Inc.Hold0.0%$736K9.50KTrimmed-92%
84FRMIFERMI INC—0.0%$730K125KAdded+67%
85RDDTReddit, Inc.Buy0.0%$673K5.00KNEW
86WYFIWHITEFIBER INCCall——$417K35.0KAdded+250%
87CRWVCoreWeave, Inc.PutHold—$387K5.00KTrimmed-97%
88GLXYGalaxy Digital Inc.Hold0.0%$369K20.0KNEW
89KTOSKRATOS DEFENSE & SECURITY SOLUTIONS, INC.Sell0.0%$353K5.00KNEW
90FRMIFERMI INCCall——$292K50.0KNEW
91CIFRCipher Digital Inc.Avoid0.0%$193K15.0KNEW
92WYFIWHITEFIBER INC—0.0%$119K10.0K—

Exited since Q4 2025

  • CYBERARK SOFTWARE LTDwas $1.53B
  • EXACT SCIENCES CORPwas $736M
  • DAYFORCE INCwas $657M
  • AVIDITY BIOSCIENCES INCwas $435M
  • CADENCE BANKwas $267M
  • COMERICA INCwas $174M
  • CIDARA THERAPEUTICS INCwas $125M
  • HILLENBRAND INCwas $57.1M
  • AVADEL PHARMACEUTICALS PLCwas $36.3M
  • TEGNA INCwas $34.0M
  • PINNACLE FINL PARTNERS INCwas $28.6M
  • SOHO HOUSE & CO INCwas $13.2M
  • TDAYwas $7.21M
  • GENEDX HOLDINGS CORPwas $6.50M
  • ANYWHERE REAL ESTATE INCwas $4.96M

Source: SEC Form 13F-HR. Positions are as-of quarter end (filed up to 45 days later) and cover US-listed equities only — shorts, non-US listings and most derivatives don’t appear. Values as reported by the filer. “Our call” is TENK/calls’s independent SEC-grounded verdict, not the fund’s view.

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.

Intraday
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%
Intraday
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%