12 West Capital Management LP 13F: Quarter-over-Quarter Portfolio Changes
12 West Capital Management LP reported a disclosed portfolio value of approximately $534.7 million in its latest SEC Form 13F-HR filing for Q2 2026, down 9.7% quarter on quarter. Over the quarter, the fund initiated 2 new positions, bought more shares in 3 holdings, trimmed 7 holdings, and exited 4 positions.
12 West Capital Management LP's top buy was Acm Resh INC (ACMR) . The fund bought 3588.5% more shares, lifting the position's portfolio weight by 5.3 percentage points. Its top sell was Warby Parker INC (WRBY) . The fund exited the position completely after it had accounted for 4.6% of the previous portfolio.
New PositionsQ2 2026
Securities disclosed for the first time in Q2 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| ENPHASE ENERGY INC | ENPH | 0.9% | Holders → |
| ON SEMICONDUCTOR CORP | ON | 0.9% | Holders → |
Top BuysQ2 2026
The fund's top buys among existing positions in Q2 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| ACM RESH INC | ACMR | +5.3% | +3588.5% | History → |
| REPLIGEN CORP | RGEN | +3.3% | +46.5% | History → |
| HEARTFLOW INC | HTFL | +2.3% | +41.0% | History → |
Top SellsQ2 2026
The fund's top sells among positions it retained in Q2 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| KURA SUSHI USA INC | KRUS | -3.4% | 60.8% | Holders → |
| HAWAIIAN ELEC INDS INC MTN B | HE | -1.7% | 37.5% | Holders → |
| SHAKE SHACK INC | SHAK | -9.5% | 30.6% | History → |
| BBB FOODS INC | TBBB | -0.3% | 24.9% | History → |
| AFFIRM HLDGS INC | AFRM | 2.9% | 14.0% | History → |
| MARAVAI LIFESCIENCES HLDGS I | MRVI | 4.8% | 2.8% | History → |
| GDS HLDGS LTD | GDS | -3.1% | 0.5% | History → |
Full ExitsQ2 2026
Positions present in the prior 13F-HR filing that no longer appear in Q2 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| WARBY PARKER INC | WRBY | 4.6% |
| E L F BEAUTY INC | ELF | 0.7% |
| AEHR TEST SYS | AEHR | 0.1% |
| COREWEAVE INC | CRWV | 0.1% |
Net Portfolio Value ChangeQ2 2026
- $0.6BPrior quarter
- $0.5BCurrent quarter
- $-0.1BNet delta
- -9.7%% change
Methodology & FAQ
How 12 West Capital Management LP Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for 12 West Capital Management LP: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description, including how confidential treatment filings are handled, is documented in the Methodology.
What stocks did 12 West Capital Management LP buy in Q2 2026?
In Q2 2026, 12 West Capital Management LP initiated 2 new positions (ENPHASE ENERGY INC (ENPH), ON SEMICONDUCTOR CORP (ON)); bought more shares of ACM RESH INC (ACMR), REPLIGEN CORP (RGEN), HEARTFLOW INC (HTFL).
What stocks did 12 West Capital Management LP sell in Q2 2026?
In Q2 2026, 12 West Capital Management LP fully sold 4 positions (WARBY PARKER INC (WRBY), E L F BEAUTY INC (ELF), AEHR TEST SYS (AEHR), COREWEAVE INC (CRWV)); reduced holdings in KURA SUSHI USA INC (KRUS), HAWAIIAN ELEC INDS INC MTN B (HE), SHAKE SHACK INC (SHAK), BBB FOODS INC (TBBB), AFFIRM HLDGS INC (AFRM) (the largest 5 of 7 reductions).
Which positions did 12 West Capital Management LP initiate in Q2 2026?
12 West Capital Management LP established 2 new positions in Q2 2026: ENPHASE ENERGY INC (ENPH, 0.9%), ON SEMICONDUCTOR CORP (ON, 0.9%).
Which existing positions saw the largest allocation increases for 12 West Capital Management LP in Q2 2026?
Of 3 existing positions with share-count increases in Q2 2026, the largest were: ACM RESH INC (ACMR, +5.3% weight, +3588.5% shares), REPLIGEN CORP (RGEN, +3.3% weight, +46.5% shares), HEARTFLOW INC (HTFL, +2.3% weight, +41.0% shares).
Which positions did 12 West Capital Management LP fully exit in Q2 2026?
12 West Capital Management LP fully exited 4 positions in Q2 2026: WARBY PARKER INC (WRBY, last-reported weight 4.6%), E L F BEAUTY INC (ELF, last-reported weight 0.7%), AEHR TEST SYS (AEHR, last-reported weight 0.1%), COREWEAVE INC (CRWV, last-reported weight 0.1%).
Which existing positions saw the largest allocation reductions for 12 West Capital Management LP in Q2 2026?
Of 7 existing positions with share-count reductions in Q2 2026, the largest were: KURA SUSHI USA INC (KRUS, -3.4% weight, -60.8% shares), HAWAIIAN ELEC INDS INC MTN B (HE, -1.7% weight, -37.5% shares), SHAKE SHACK INC (SHAK, -9.5% weight, -30.6% shares), BBB FOODS INC (TBBB, -0.3% weight, -24.9% shares), AFFIRM HLDGS INC (AFRM, 2.9% weight, -14.0% shares), MARAVAI LIFESCIENCES HLDGS I (MRVI, 4.8% weight, -2.8% shares), GDS HLDGS LTD (GDS, -3.1% weight, -0.5% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.