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Ursa Fund Management, LLC — 13F Holdings & Portfolio

CIK 1693838 · latest 13F-HR filed 2026-08-14

Backtest portfolio

Ursa Fund Management, LLC manages $1.28B in 13F-reported U.S. long-equity assets across 38 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are MSFT (16.04%), MSFT (16.04%), MU (11.28%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 15 new positions, exited 6, added to 4, and trimmed 1.

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
156 DIABLO RD, STE 250
DANVILLE, CA 94526
Phone
(415) 529-6040
Filing Manager
Ursa Fund Management, LLC
Danville, CA
Signatory
Andrew Hahn
Manager
Loading holdings…
AUM

$1.28B

Long-equity book

Holdings

38

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+15 / −6 / ↑4 / ↓1

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • GABELLI EQUITY TR INC$29.4M +1426.1%
  • COLUMBIA FINL INC$18.3M +209.2%
  • NORTHFIELD BANCORP INC DEL$4.5M +335.2%
  • WHEELER REAL ESTATE INVT TR$498.0K +44.8%
Show all 4 →

Top Trims

  • ISHARES BITCOIN TRUST ETF-$135.8K -5.2%
Show all 1 →

New Positions

  • MICROSOFT CORP$205.2M
  • MICRON TECHNOLOGY INC$144.3M
  • TESLA INC$126.2M
  • AMAZON COM INC$35.8M
  • NVIDIA CORPORATION$20.0M
Show all 15 →

Exited Positions

  • PENUMBRA INC$11.5M
  • ISHARES TR$1.5M
  • WIX COM LTD$1.4M
  • MORGAN STANLEY CHINA A SH FD$1.2M
  • IAC INC$1.0M
Show all 6 →
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 MICROSOFT CORP Put MSFT 594918104 $205.2M 16.04% 550,000 SH
2 MICROSOFT CORP MSFT 594918104 $205.2M 16.04% 550,000 SH
3 MICRON TECHNOLOGY INC MU 595112103 $144.3M 11.28% 125,000 SH
4 MICRON TECHNOLOGY INC Put MU 595112103 $144.3M 11.28% 125,000 SH
5 TESLA INC TSLA 88160R101 $126.2M 9.86% 300,000 SH
6 TESLA INC Put TSLA 88160R101 $126.2M 9.86% 300,000 SH
7 STATE STR SPDR S&P 500 ETF T Put SPY 78462F103 $56.0M 4.38% 75,000 SH
8 AMAZON COM INC AMZN 023135106 $35.8M 2.79% 150,000 SH
9 AMAZON COM INC Put AMZN 023135106 $35.8M 2.79% 150,000 SH
10 GABELLI EQUITY TR INC GAB 362397101 $31.4M 2.46% 5,555,196 SH
11 COLUMBIA FINL INC CLBK 197641103 $27.1M 2.12% 1,275,888 SH
12 COLUMBIA FINL INC Call CLBK 197641103 $20.1M 1.57% 944,900 SH
13 NVIDIA CORPORATION Put NVDA 67066G104 $20.0M 1.56% 100,000 SH
14 NVIDIA CORPORATION NVDA 67066G104 $20.0M 1.56% 100,000 SH
15 ISHARES TR Put IWM 464287655 $15.0M 1.17% 50,000 SH
16 SPDR SERIES TRUST Put KRE 78464A698 $12.2M 0.95% 163,200 SH
17 SPDR SERIES TRUST Call KRE 78464A698 $12.0M 0.94% 160,000 SH
18 EOS ENERGY ENTERPRISES INC Put EOSE 29415C101 $8.9M 0.69% 1,508,500 SH
19 EOS ENERGY ENTERPRISES INC EOSE 29415C101 $7.3M 0.57% 1,235,459 SH
20 NORTHFIELD BANCORP INC DEL NFBK 66611T108 $5.9M 0.46% 400,000 SH
21 INVESCO EXCHANGE TRADED FD T Call RSP 46137V357 $4.3M 0.33% 20,000 SH
22 BOSTON SCIENTIFIC CORP Call BSX 101137107 $3.2M 0.25% 75,000 SH
23 ISHARES BITCOIN TRUST ETF IBIT 46438F101 $2.5M 0.19% 74,400 SH
24 ISHARES BITCOIN TRUST ETF Put IBIT 46438F101 $2.3M 0.18% 70,000 SH
25 OPTIMUM COMMUNICATIONS INC Put OPTU 02156K103 $2.1M 0.16% 1,447,800 SH
26 OPTIMUM COMMUNICATIONS INC OPTU 02156K103 $2.0M 0.16% 1,407,850 SH
27 WHEELER REAL ESTATE INVT TR WHLRP 963025309 $1.6M 0.13% 161,000 SH
28 QXO INC Call QXO 82846H405 $967.7K 0.08% 56,000 SH
29 SHUTTERSTOCK INC SSTK 825690100 $308.8K 0.02% 22,138 SH
30 RE/MAX HLDGS INC RMAX 75524W108 $246.5K 0.02% 25,000 SH
31 COLUMBIA FINL INC Put CLBK 197641103 $229.2K 0.02% 10,800 SH
32 PLUG PWR INC PLUG 72919P202 $203.2K 0.02% 75,000 SH
33 INMED PHARMACEUTICALS INC INM 457637700 $195.0K 0.02% 125,800 SH
34 GETTY IMAGES HOLDINGS INC Put GETY 374275105 $174.7K 0.01% 203,100 SH
35 CANADIAN SOLAR INC CSIQ 136635109 $160.2K 0.01% 10,000 SH
36 PARAMOUNT SKYDANCE CORP PSKY 69932A204 $98.6K 0.01% 10,000 SH
37 VIRGIN GALACTIC HOLDINGS INC SPCE 92766K403 $72.2K 0.01% 25,000 SH
38 GETTY IMAGES HOLDINGS INC GETY 374275105 $38 0.00% 44 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $1.28B 38 0001693838-26-000004
2026-03-31 2026-05-15 $107.5M 20 0001693838-26-000003
2025-12-31 2026-02-17 $2.44B 44 0001693838-26-000002
2025-09-30 2025-11-14 $89.1M 18 0001693838-25-000004