12 West Capital Management LP — 13F Holdings & Portfolio
CIK 1540531 · latest 13F-HR filed 2026-08-14
12 West Capital Management LP manages $534.7M in 13F-reported U.S. long-equity assets across 18 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are GDS (14.40%), TBBB (13.39%), RBLX (9.66%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 2 new positions, exited 4, added to 7, and trimmed 6.
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.
$534.7M
Long-equity book
18
Distinct positions
2026-06-30
Filed 2026-08-14
+2 / −4 / ↑7 / ↓6
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
| Name | Title / Status | Ownership | Type |
|---|
Quarter-over-quarter changes
Share-count changes vs the prior 13F.
Top Adds (vs prior quarter)
- ACM RESH INC$28.3M +11794.2%
- MARAVAI LIFESCIENCES HLDGS I$23.5M +114.4%
- REPLIGEN CORP$15.7M +69.7%
- AFFIRM HLDGS INC$13.0M +53.0%
- HEARTFLOW INC$10.9M +70.1%
Top Trims
- SHAKE SHACK INC-$61.7M -56.0%
- GDS HLDGS LTD-$26.8M -25.9%
- KURA SUSHI USA INC-$21.1M -67.7%
- HAWAIIAN ELEC INDS INC MTN B-$11.5M -43.0%
- BBB FOODS INC-$9.3M -11.5%
Exited Positions
- WARBY PARKER INC$27.5M
- E L F BEAUTY INC$4.2M
- AEHR TEST SYS$815.8K
- COREWEAVE INC$542.3K
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 | GDS HLDGS LTD | GDS | 36165L108 | $77.0M | 14.40% | 2,563,192 | SH |
| 2 | BBB FOODS INC | TBBB | G0896C103 | $71.6M | 13.39% | 1,717,770 | SH |
| 3 | ROBLOX CORP | RBLX | 771049103 | $51.7M | 9.66% | 950,000 | SH |
| 4 | SHAKE SHACK INC | SHAK | 819047101 | $48.4M | 9.05% | 863,411 | SH |
| 5 | MARAVAI LIFESCIENCES HLDGS I | MRVI | 56600D107 | $44.1M | 8.24% | 7,060,195 | SH |
| 6 | REPLIGEN CORP | RGEN | 759916109 | $38.2M | 7.15% | 280,165 | SH |
| 7 | AFFIRM HLDGS INC | AFRM | 00827B106 | $37.5M | 7.02% | 460,000 | SH |
| 8 | TOAST INC | TOST | 888787108 | $34.7M | 6.49% | 1,247,840 | SH |
| 9 | ACM RESH INC | ACMR | 00108J109 | $28.6M | 5.34% | 225,000 | SH |
| 10 | HEARTFLOW INC | HTFL | 42238D107 | $26.5M | 4.95% | 902,500 | SH |
| 11 | CLOUDFLARE INC | NET | 18915M107 | $25.8M | 4.82% | 105,000 | SH |
| 12 | HAWAIIAN ELEC INDS INC MTN B | HE | 419870100 | $15.2M | 2.85% | 1,125,000 | SH |
| 13 | KURA SUSHI USA INC | KRUS | 501270102 | $10.1M | 1.88% | 175,000 | SH |
| 14 | ONCE UPON A FARM PBC | OFRM | 68237F108 | $7.5M | 1.40% | 365,000 | SH |
| 15 | SHOPIFY INC | SHOP | 82509L107 | $5.9M | 1.11% | 52,000 | SH |
| 16 | ENPHASE ENERGY INC | ENPH | 29355A107 | $4.9M | 0.92% | 100,000 | SH |
| 17 | ON SEMICONDUCTOR CORP | ON | 682189105 | $4.7M | 0.88% | 50,000 | SH |
| 18 | NU HLDGS LTD | NU | G6683N103 | $2.5M | 0.46% | 185,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $534.7M | 18 | 0001540531-26-000005 |
| 2026-03-31 | 2026-05-15 | $592.4M | 20 | 0001540531-26-000003 |
| 2025-12-31 | 2026-02-17 | $839.7M | 18 | 0001540531-26-000002 |
| 2025-09-30 | 2025-11-14 | $964.1M | 17 | 0001540531-25-000009 |
NEW YORK, NY 10018