BEACONLIGHT CAPITAL, LLC — 13F Holdings & Portfolio

CIK 1569537 · latest 13F-HR filed 2026-08-14

BEACONLIGHT CAPITAL, LLC manages $283.3M in 13F-reported U.S. long-equity assets across 33 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are SPY (15.66%), SXT (9.65%), CSTM (8.78%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 12 new positions, exited 14, added to 9, and trimmed 10.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Filer Information
Address
9 WEST 57TH STREET
27TH FLOOR
NEW YORK, NY 10019
Phone
(212) 256-8816
Filing Manager
BEACONLIGHT CAPITAL, LLC
New York, NY
Signatory
Ed Bosek
Managing Member
Loading holdings…
AUM

$283.3M

Long-equity book

Holdings

33

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+12 / −14 / ↑9 / ↓10

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • SENSIENT TECHNOLOGIES CORP$16.6M +154.8%
  • SNOWFLAKE INC$10.8M +389.9%
  • NATERA INC$7.8M +115.4%
  • SOMNIGROUP INTERNATIONAL INC$5.7M +129.9%
  • JAMES HARDIE INDS PLC$5.6M +193.0%
Show all 9

Top Trims

  • STMICROELECTRONICS N V-$10.2M -76.7%
  • RESIDEO TECHNOLOGIES INC-$10.0M -49.9%
  • GULFPORT ENERGY CORP-$4.6M -63.8%
  • CONSTELLIUM SE-$3.9M -13.7%
  • CELSIUS HLDGS INC-$3.8M -68.6%
Show all 10

New Positions

  • WERNER ENTERPRISES INC$12.0M
  • COMPASS INC$8.0M
  • DELTA AIR LINES INC$7.7M
  • KNIGHT-SWIFT TRANSN HLDGS IN$6.9M
  • TWILIO INC$6.1M
Show all 12

Exited Positions

  • FEDEX CORP$5.4M
  • EQT CORP$4.0M
  • SOLSTICE ADVANCED MATLS INC$3.5M
  • SERVICENOW INC$3.0M
  • CELANESE CORP DEL$2.7M
Show all 14
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 STATE STR SPDR S&P 500 ETF T Put SPY 78462F103 $44.4M 15.66% 59,400 SH
2 SENSIENT TECHNOLOGIES CORP SXT 81725T100 $27.3M 9.65% 221,811 SH
3 CONSTELLIUM SE CSTM F21107101 $24.9M 8.78% 779,899 SH
4 NATERA INC NTRA 632307104 $14.5M 5.11% 53,312 SH
5 SNOWFLAKE INC SNOW 833445109 $13.5M 4.78% 53,180 SH
6 CHENIERE ENERGY INC LNG 16411R208 $13.3M 4.69% 55,621 SH
7 WERNER ENTERPRISES INC WERN 950755108 $12.0M 4.25% 276,026 SH
8 INVESCO QQQ TR Put QQQ 46090E103 $11.7M 4.13% 15,900 SH
9 SOMNIGROUP INTERNATIONAL INC SGI 88023U101 $10.1M 3.55% 128,310 SH
10 RESIDEO TECHNOLOGIES INC REZI 76118Y104 $10.0M 3.55% 322,960 SH
11 JAMES HARDIE INDS PLC JHX G4253H101 $8.5M 3.01% 326,195 SH
12 COMPASS INC COMP 20464U100 $8.0M 2.83% 649,901 SH
13 TECK RESOURCES LTD TECK 878742204 $8.0M 2.81% 133,807 SH
14 DELTA AIR LINES INC DAL 247361702 $7.7M 2.71% 81,820 SH
15 KNIGHT-SWIFT TRANSN HLDGS IN KNX 499049104 $6.9M 2.42% 88,047 SH
16 UNITY SOFTWARE INC U 91332U101 $6.1M 2.14% 212,475 SH
17 TWILIO INC TWLO 90138F102 $6.1M 2.14% 29,366 SH
18 BROOKDALE SR LIVING INC BKD 112463104 $5.9M 2.07% 364,976 SH
19 SCHOLAR ROCK HLDG CORP SRRK 80706P103 $4.8M 1.71% 87,893 SH
20 UNITED AIRLS HLDGS INC UAL 910047109 $4.8M 1.69% 35,175 SH
21 TRANSOCEAN LTD RIG H8817H100 $4.8M 1.69% 977,964 SH
22 TANDEM DIABETES CARE INC TNDM 875372203 $4.0M 1.42% 266,009 SH
23 HUMANA INC HUM 444859102 $3.3M 1.15% 8,220 SH
24 VICOR CORP VICR 925815102 $3.1M 1.10% 8,218 SH
25 STMICROELECTRONICS N V STM 861012102 $3.1M 1.09% 41,332 SH
26 CHAMPION HOMES INC SKY 830830105 $3.0M 1.06% 34,056 SH
27 DIGIMARC CORP DMRC 25382K100 $2.8M 0.98% 338,948 SH
28 GULFPORT ENERGY CORP GPOR 402635502 $2.6M 0.92% 15,325 SH
29 ELEVANCE HEALTH INC FORMERLY ELV 036752103 $2.3M 0.81% 5,946 SH
30 QUIDELORTHO CORP QDEL 219798105 $1.8M 0.64% 102,800 SH
31 CELSIUS HLDGS INC CELH 15118V207 $1.7M 0.62% 59,576 SH
32 VENTURE GLOBAL INC VG 92333F101 $1.4M 0.48% 122,022 SH
33 TRANSMEDICS GROUP INC TMDX 89377M109 $1.0M 0.36% 15,406 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $283.3M 33 0000919574-26-005460
2026-03-31 2026-05-14 $189.8M 34 0000919574-26-003095
2025-12-31 2026-02-17 $171.2M 23 0000919574-26-001169
2025-09-30 2025-11-14 $202.7M 28 0000919574-25-006888