MLAA — Mountain Lake Acquisition Corp. II
Price · 2026-03-19 → 2026-08-21
108 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2026-03-19.
Measured signals that fired on MLAA
| date | signal | measured base rate |
|---|---|---|
| 2026-05-20 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
| 2026-04-16 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-01-28 | Grinberg Paul Chief Executive Officer | Open-market purchase | 510.0K | 10.00 | 5.1M |
| 2026-01-28 | Horlick Douglas Chief Financial Officer | Open-market purchase | 510.0K | 10.00 | 5.1M |
| 2026-01-28 | MOUNTAIN LAKE ACQUISITION SPONSOR II LLC | Open-market purchase | 510.0K | 10.00 | 5.1M |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 20.7M | 2.1M |
| Magnetar Financial LLC | 19.7M | 2.0M |
| Linden Advisors LP | 14.8M | 1.5M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 12.3M | 1.2M |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 10.4M | 1.1M |
| Polar Asset Management Partners Inc. | 9.8M | 1.0M |
| SONA ASSET MANAGEMENT (US) LLC | 9.8M | 1.0M |
| Verition Fund Management LLC | 8.9M | 900.0K |
| Shaolin Capital Management LLC | 7.3M | 737.3K |
| TWO SIGMA INVESTMENTS, LP | 5.6M | 567.7K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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