READYSTATE ASSET MANAGEMENT LP — 13F Holdings & Portfolio
CIK 1900923 · latest 13F-HR filed 2026-05-15
READYSTATE ASSET MANAGEMENT LP manages $2.23B in 13F-reported U.S. long-equity assets across 806 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are RIVN (4.48%), MIRM (3.76%), NSC (2.37%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 167 new positions, exited 136, added to 59, and trimmed 104.
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.
$2.23B
Long-equity book
806
Distinct positions
2026-03-31
Filed 2026-05-15
+167 / −136 / ↑59 / ↓104
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- WARNER BROS DISCOVERY INC$36.5M +399.9%
- CENTURY ALUM CO$12.6M +49.6%
- ABIVAX SA$9.6M +74.3%
- KENVUE INC$7.9M +76.7%
- VERTEX INC$7.2M +101.6%
Top Trims
- GRANITE CONSTR INC-$55.7M -54.8%
- RIVIAN AUTOMOTIVE INC-$52.0M -34.2%
- HERSHEY CO-$45.1M -62.6%
- PAR TECHNOLOGY CORP-$21.0M -93.4%
- BILL HOLDINGS INC-$16.1M -94.4%
New Positions
- NORFOLK SOUTHN CORP$52.8M
- MASIMO CORP$30.4M
- ARROWHEAD PHARMACEUTICALS IN$25.9M
- ALKAMI TECHNOLOGY INC$25.2M
- SUPER MICRO COMPUTER INC$21.8M
Exited Positions
- ISHARES TR$252.7M
- CYBERARK SOFTWARE LTD$50.3M
- BRISTOL-MYERS SQUIBB CO$42.5M
- WISDOMTREE INC$35.8M
- ISHARES TR$33.1M
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 | RIVIAN AUTOMOTIVE INC | RIVN | 76954AAD5 | $99.9M | 4.48% | 104,000,000 | PRN |
| 2 | MIRUM PHARMACEUTICALS INC | MIRM | 604749AB7 | $83.8M | 3.76% | 28,000,000 | PRN |
| 3 | NORFOLK SOUTHN CORP | NSC | 655844108 | $52.8M | 2.37% | 183,827 | SH |
| 4 | GRANITE CONSTR INC | GVA | 387328AD9 | $46.0M | 2.07% | 17,500,000 | PRN |
| 5 | WARNER BROS DISCOVERY INC | WBD | 934423104 | $45.6M | 2.05% | 1,659,671 | SH |
| 6 | TRANSMEDICS GROUP INC | TMDX | 89377MAB5 | $38.9M | 1.75% | 30,000,000 | PRN |
| 7 | LANTHEUS HLDGS INC | LNTH | 516544AB9 | $38.5M | 1.73% | 32,000,000 | PRN |
| 8 | BENTLEY SYS INC | BSY | 08265TAD1 | $38.0M | 1.71% | 40,000,000 | PRN |
| 9 | CENTURY ALUM CO | CENX | 156431AQ1 | $38.0M | 1.71% | 12,070,000 | PRN |
| 10 | CENTRUS ENERGY CORP | LEU | 15643UAE4 | $37.2M | 1.67% | 18,302,000 | PRN |
| 11 | SOLENO THERAPEUTICS INC | SLNO | 834203309 | $31.9M | 1.43% | 952,165 | SH |
| 12 | FRESHPET INC | FRPT | 358039AB1 | $31.6M | 1.42% | 27,500,000 | PRN |
| 13 | MASIMO CORP | MASI | 574795100 | $30.4M | 1.37% | 171,115 | SH |
| 14 | RIVIAN AUTOMOTIVE INC Put | RIVN | 76954A103 | $29.3M | 1.32% | 1,950,000 | SH |
| 15 | IMMUNOME INC | IMNM | 45257U108 | $28.5M | 1.28% | 1,301,862 | SH |
| 16 | HERSHEY CO | HSY | 427866108 | $26.9M | 1.21% | 129,513 | SH |
| 17 | ALPHABET INC Put | GOOGL | 02079K305 | $26.8M | 1.20% | 93,100 | SH |
| 18 | TXNM ENERGY INC | TXNM | 69349H107 | $26.7M | 1.20% | 456,446 | SH |
| 19 | ARROWHEAD PHARMACEUTICALS IN | ARWR | 04280AAC4 | $25.9M | 1.16% | 25,000,000 | PRN |
| 20 | NVIDIA CORPORATION Put | NVDA | 67066G104 | $25.3M | 1.13% | 144,900 | SH |
| 21 | AMAZON COM INC Put | AMZN | 023135106 | $25.2M | 1.13% | 121,200 | SH |
| 22 | ALKAMI TECHNOLOGY INC | ALKT | 01644JAB4 | $25.2M | 1.13% | 28,000,000 | PRN |
| 23 | WORLD KINECT CORPORATION | WKC | 98149GAB6 | $25.0M | 1.12% | 23,750,000 | PRN |
| 24 | BROADCOM INC Put | AVGO | 11135F101 | $24.5M | 1.10% | 79,100 | SH |
| 25 | APPLE INC Put | AAPL | 037833100 | $24.2M | 1.09% | 95,300 | SH |
| 26 | TESLA INC Put | TSLA | 88160R101 | $22.8M | 1.02% | 61,200 | SH |
| 27 | META PLATFORMS INC Put | META | 30303M102 | $22.7M | 1.02% | 39,700 | SH |
| 28 | LEMAITRE VASCULAR INC | LMAT | 525558AB8 | $22.7M | 1.02% | 20,000,000 | PRN |
| 29 | ABIVAX SA | ABVX | 00370M103 | $22.5M | 1.01% | 202,022 | SH |
| 30 | SUPER MICRO COMPUTER INC | SMCI | 86800UAD6 | $21.8M | 0.98% | 25,000,000 | PRN |
| 31 | LIVANOVA PLC | LIVN | 53802LAB8 | $21.0M | 0.94% | 18,000,000 | PRN |
| 32 | BLACKBERRY LTD | — | 09228FAM5 | $20.9M | 0.94% | 18,020,000 | PRN |
| 33 | ELECTRONIC ARTS INC | EA | 285512109 | $19.3M | 0.87% | 94,897 | SH |
| 34 | ISHARES INC Put | EWZ | 464286400 | $19.2M | 0.86% | 500,000 | SH |
| 35 | KENVUE INC | KVUE | 49177J102 | $18.2M | 0.82% | 1,057,316 | SH |
| 36 | LIBERTY BROADBAND CORP | LBRDK | 530307305 | $18.0M | 0.81% | 357,905 | SH |
| 37 | ANI PHARMACEUTICALS INC | ANIP | 00182CAC7 | $17.9M | 0.80% | 14,400,000 | PRN |
| 38 | CHEESECAKE FACTORY INC | CAKE | 163072AC5 | $17.3M | 0.78% | 17,000,000 | PRN |
| 39 | GOODYEAR TIRE & RUBR CO | GT | 382550101 | $17.3M | 0.78% | 2,606,350 | SH |
| 40 | MICROSOFT CORP Put | MSFT | 594918104 | $16.7M | 0.75% | 45,200 | SH |
| 41 | VERTEX INC | VRTX | 92538JAB2 | $14.4M | 0.65% | 16,500,000 | PRN |
| 42 | SHOPIFY INC | SHOP | 82509L107 | $14.3M | 0.64% | 120,412 | SH |
| 43 | HASBRO INC | HAS | 418056107 | $14.2M | 0.64% | 151,602 | SH |
| 44 | EQV VENTURES AC CORP. II | EVAC | G3106Q102 | $13.9M | 0.62% | 1,375,000 | SH |
| 45 | PAR TECHNOLOGY CORP | PAR | 698884AH6 | $13.6M | 0.61% | 17,590,000 | PRN |
| 46 | ALIGNMENT HEALTHCARE INC | ALHC | 01625VAB0 | $12.7M | 0.57% | 9,000,000 | PRN |
| 47 | CLEARWATER PAPER CORP | CLW | 18538R103 | $11.2M | 0.50% | 781,384 | SH |
| 48 | IRHYTHM HOLDINGS INC | IRTC | 450056AB2 | $11.0M | 0.49% | 10,000,000 | PRN |
| 49 | CAESARS ENTERTAINMENT INC NE | CZR | 12769G100 | $10.8M | 0.49% | 409,716 | SH |
| 50 | PARSONS CORP DEL | — | 70202LAD4 | $10.8M | 0.48% | 10,934,000 | PRN |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-15 | $2.23B | 806 | 0001214659-26-006468 |
| 2025-12-31 | 2026-02-17 | $2.47B | 386 | 0001214659-26-001980 |
| 2025-09-30 | 2025-11-07 | $2.35B | 355 | 0001214659-25-016078 |