ARDSLEY ADVISORY PARTNERS LP
CIK 900529
13F filing for Q2 2026・No. 2,652
- Holdings
- US$960.21M
- Quarter change
- +US$175.85M
- Entries
- 145
- Net bought (estimate)
- +US$133.95M
The quarter change is the holdings' value against the quarter before, price moves included — not what was bought or sold; each institution's page estimates that.
Net bought (estimate)
Each stock's change in shares at the quarter-end price, added up: a new position counts as bought, one sold out as sold, shares held long only. Splits are compared split-adjusted; corporate actions under a new CUSIP are not estimated. An estimate from the filings, not actual trades.
- New 58
- Sold out 45
- Cut 29
- Added 30
- Corporate actions 0
- Unchanged 13
Largest holdings
130 stocks worth US$921.07M, options and bonds left out.
| Stock | This quarter | Shares | Value | Weight |
|---|---|---|---|---|
| SNDKSANDISK CORPCOM | AddedSplit 1:2 | 25,000 | US$56.69M | 6.15% |
| AMDAMDCOM | Added | 93,000 | US$54.02M | 5.87% |
| SEZZLE INCCOM | Cut | 215,000 | US$36.9M | 4.01% |
| WULFTERAWULF INCCOM | Cut | 966,000 | US$23.69M | 2.57% |
| BRIGHTSPRING HEALTH SVCS INCCOM | Cut | 325,000 | US$22.67M | 2.46% |
| EBAYEBAY INC.COM | Added | 201,000 | US$22.26M | 2.42% |
| RUNSUNRUN INCCOM | Added | 1,600,000 | US$21.41M | 2.32% |
| VIAVVIAVI SOLUTIONS INCCOM | Cut | 390,000 | US$18.62M | 2.02% |
| PEVERPURE INCCL A | New | 233,000 | US$18.3M | 1.99% |
| ARMARM HOLDINGS PLCSPONSORED ADS | Added | 47,000 | US$16.62M | 1.80% |
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Filings
The quarter's original 13F filings (SEC).
- 13F-HRFiled July 13, 2026SEC ↗
13F covers long positions in US-listed securities only; the data is SEC's, filed within 45 days of the quarter's end.