Serina Therapeutics
SER · NYSE American
$1.66+$0.01 (+0.61%)TodayMarket closed ·
Prev close $1.65
Who owns SER
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 94.5% of SER’s shares.
- Bailey (Gregory Hugh)57.1%
- Juvenescence Ltd21.8%
- Sio Capital Management, LLC6.7%
- Puffinus L.P.6.0%
- Next 6 largest institutions2.9%
- All other shareholders5.5%
| Holder | Shares | % of shares |
|---|---|---|
| Bailey (Gregory Hugh) | 8.56M | 57.10% |
| Juvenescence Ltd | 3.27M | 21.78% |
| Sio Capital Management, LLC | 1.00M | 6.67% |
| Puffinus L.P. | 904.88K | 6.03% |
| Vanguard Capital Management, LLC | 162.20K | 1.08% |
| Ledger (Steven A) | 105.83K | 0.71% |
| Waverly Advisors, LLC | 67.49K | 0.45% |
| Geode Capital Management, L.L.C. | 51.01K | 0.34% |
| Wilson (Karen J) | 30.10K | 0.20% |
| Keel Point, LLC | 21.51K | 0.14% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 125.81K | 0.84% |
| Fidelity Extended Market Index Fund | 41.63K | 0.28% |
| Vanguard Extended Market Index Fund | 40.52K | 0.27% |
| Fidelity Series Total Market Index Fund | 4.74K | 0.03% |
| Fidelity Total Market Index Fund | 2.59K | 0.02% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $77.93K (7 trades) of SER on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Simon Farrell | Award | 30.50K | — |
| Brannan Stephen K. | Buy | 1.00K | $2.03K |
| Marshall Richard Peter | Award | 15.25K | — |
| Brannan Stephen K. | Award | 15.25K | — |
| Venkatesan Jay | Other | 96.53K | $217.18K |
| Venkatesan Jay | Award | 15.25K | — |
| Venkatesan Jay | Other | 224.15K | $504.34K |
| Bailey Gregory | Other | 762.55K | $1.72M |
| Bailey Gregory | Award | 3.33M | — |
| Bailey Gregory | Award | 15.25K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 56.60K
- Days to cover
- 1.00
- % of shares outstanding
- 0.38%
- Average daily volume
- 121.09K
- Change since last report
- −52.6%
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