Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

BEACONLIGHT CAPITAL, LLC 13F Holdings -- Portfolio & Top Positions (2026-03-31)

BEACONLIGHT CAPITAL, LLC (CIK 1569537) reported $189.8M across 32 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: CSTM ($28.8M, 15.18%), REZI ($20.0M, 10.55%), STM ($13.3M, 7.00%), SPY ($12.5M, 6.58%), SXT ($10.7M, 5.66%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1CSTMCONSTELLIUM SE$28.8M15.18%1.2MTrimmed
2REZIRESIDEO TECHNOLOGIES INC$20.0M10.55%594,234Trimmed
3STMSTMICROELECTRONICS N V$13.3M7.00%384,477New
4SPYSTATE STR SPDR S&P 500 ETF T$12.5M6.58%19,200New
5SXTSENSIENT TECHNOLOGIES CORP$10.7M5.66%124,182Trimmed
6TECKTECK RESOURCES LTD$9.5M5.00%183,299Trimmed
7LNGCHENIERE ENERGY INC$8.5M4.46%29,799Trimmed
8UUNITY SOFTWARE INC$7.6M3.99%345,309Added
9GPORGULFPORT ENERGY CORP$7.2M3.79%33,981Trimmed
10NTRANATERA INC$6.7M3.54%33,589Added
11CELHCELSIUS HLDGS INC$5.5M2.92%156,391New
12FDXFEDEX CORP$5.4M2.85%15,201New
13TNDMTANDEM DIABETES CARE INC$4.9M2.56%253,877New
14TPXSOMNIGROUP INTERNATIONAL INC$4.4M2.31%59,199Trimmed
15TMDXTRANSMEDICS GROUP INC$4.2M2.22%42,478Added
16EQTEQT CORP$4.0M2.10%62,760Trimmed
17SOLSTICE ADVANCED MATLS INC$3.5M1.86%46,433New
18NOWSERVICENOW INC$3.0M1.58%28,682New
19JHXJAMES HARDIE INDS PLC$2.9M1.54%153,863Added
20SNOWSNOWFLAKE INC$2.8M1.46%18,317Trimmed
21CECELANESE CORP DEL$2.7M1.42%41,055New
22AVGOBROADCOM INC$2.6M1.39%8,516New
23QDELQUIDELORTHO CORP$2.5M1.32%152,057Trimmed
24VICRVICOR CORP$2.2M1.14%13,477Trimmed
25RIGTRANSOCEAN LTD$2.2M1.14%326,947New

Source: SEC Form 13F filings · as of 2026-03-31