Serina Therapeutics (SER)
Develops long-acting drug conjugates through its POZ polymer platform.
$2.65
Pre-market−0.05 (−1.85%)
At close$2.70(+8.00%)
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Breakdown13F · 13D/G · Form 4
| Institutions25 holders · as of Mar 31, 2026 | 9.82% | 1.47M shares | |
| Otherremainder | 90.18% | 13.53M shares |
15.00M company shares as of Aug 21, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing
Two share counts disagree (25.40M in the company's Sep 3, 2026 report, 15.00M elsewhere); stakes use the report.
Institutions13F, as of Mar 31, 2026
25 holders · 1.47M shares · 10 new positions · 16 increased · 1 reduced · 7 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Sio Capital Management, LLC | 1.00M | 6.67% | +1.00Mnew | May 14, 2026 |
| Vanguard Capital Management LLC | 159.1K | 1.06% | +159.1Knew | May 15, 2026 |
| Waverly Advisors, LLC | 67.5K | 0.45% | 0 | May 15, 2026 |
| Geode Capital Management, LLC | 65.0K | 0.43% | +34.6K | May 15, 2026 |
| BlackRock, Inc. | 58.3K | 0.39% | +41.0K | May 13, 2026 |
| Jane Street Group, LLC | 39.7K | 0.26% | +39.7Knew | May 12, 2026 |
| Keel Point, LLC | 21.5K | 0.14% | +3.7K | Jun 1, 2026 |
| Vanguard Fiduciary Trust Co | 20.0K | 0.13% | +20.0Knew | May 8, 2026 |
Ownership statements13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| JuvVentures (UK) Limitedincl. Juvenescence Limited | 27.30% | 4.40M | 13D | Jul 22, 2026 ↗ |
| Sio Capital Management, LLC | 6.71% | 1.00M | 13G | May 4, 2026 ↗ |
Insider tradesForm 4
Latest trades
Nothing filed in the last 12 months.
CongressHouse and Senate disclosures
Not reported.