SER
Serina Therapeutics, Inc.Company with tickers: SER
CIK
1708599
CUSIP
81751A108
Shares Outstanding
14,997,505
13F Activity (30d)
22 filings
20 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 24
Total Value: $2,814,852
Total Shares: 1,450,962
Institutional Ownership Trend
Holder Concentration
Across 24 13F filers · Δ vs Dec 31, 2025Top Holder
68.9%
+27.0 pts
Top 5
93.0%
+11.3 pts
Top 10
99.6%
+0.7 pts
HHI
4,940
Highly concentrated
+2,646
Quarterly Activity
vs Dec 31, 2025
New
10
Increased
5
Decreased
1
Sold Out
8
Unchanged
8
Holder count:
+2
Institutional value:
+242.5%
Shares held:
+237.8%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega BlackRock, Inc. | +41,015 | 58,264 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +34,564 | 64,973 | |
| Large OSAIC HOLDINGS, INC. | +999 | 1,001 | |
| Mid Tower Research Capital LLC (TRC) | +394 | 843 | |
| Mega WELLS FARGO & COMPANY/MN | +2 | 3,606 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega UBS Group AG | −428 | 5 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small Sio Capital Management, LLC | 1,000,000 | $1,940,000 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 159,136 | $308,723 | |
| Mega JANE STREET GROUP, LLC | 39,653 | $76,926 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 20,009 | $38,817 | |
| Small Avidian Wealth Enterprises, LLC | 18,800 | $36,472 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 180,013 | $344,363 | |
| Mid BROADWOOD CAPITAL INC | 54,484 | $104,227 | |
| Small Linscomb Wealth, Inc. | 18,800 | $35,964 | |
| Small Keel Point, LLC | 17,774 | $34,001 | |
| Mega NORTHERN TRUST CORP | 14,082 | $26,937 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small Sio Capital Management, LLC | $1,940,000 | 68.92% | 1,000,000 | Shares | Sole | 2026-05-14 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $308,723 | 10.97% | 159,136 | Shares | Defined | 2026-05-15 | ||||
| Mid Waverly Advisors, LLC | $130,934 | 4.65% | 67,492 | Shares | Sole | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $126,047 | 4.48% | 64,973 | Shares | Defined | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $113,031 | 4.02% | 58,264 | Shares | Sole | 2026-05-13 | ||||
| Mega JANE STREET GROUP, LLC | $76,926 | 2.73% | 39,653 | Shares | Defined | 2026-05-12 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $38,817 | 1.38% | 20,009 | Shares | Defined | 2026-05-08 | ||||
| Small Avidian Wealth Enterprises, LLC | $36,472 | 1.30% | 18,800 | Shares | Sole | 2026-05-07 | ||||
| Mega STATE STREET CORP | $24,750 | 0.88% | 12,758 | Shares | Defined | 2026-05-15 | ||||
| Small Caitong International Asset Management Co., Ltd | $7,725 | 0.27% | 3,982 | Shares | Sole | 2026-05-11 | ||||
| Mega WELLS FARGO & COMPANY/MN | $6,995 | 0.25% | 3,606 | Shares | Defined | 2026-05-11 | ||||
| Large OSAIC HOLDINGS, INC. | $1,941 | 0.07% | 1,001 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $1,635 | 0.06% | 843 | Shares | Defined | 2026-05-15 | ||||
| Mega Vanguard Global Advisers, LLC | $713 | 0.03% | 368 | Shares | Defined | 2026-05-08 | ||||
| Small Piscataqua Savings Bank Bank | $54 | 0.00% | 28 | Shares | Sole | 2026-04-10 | ||||
| Mid Advisory Services Network, LLC | $27 | 0.00% | 14 | Shares | Sole | 2026-05-15 | ||||
| Small ALBION FINANCIAL GROUP /UT | $15 | 0.00% | 8 | Shares | Sole | 2026-04-27 | ||||
| Small Pacifica Partners Inc. | $15 | 0.00% | 8 | Shares | Defined | 2026-04-09 | ||||
| Mega MORGAN STANLEY | $15 | 0.00% | 8 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS Group AG | $9 | 0.00% | 5 | Shares | Defined | 2026-05-05 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $3 | 0.00% | 2 | Shares | Defined | 2026-05-12 | ||||
| Large Rockefeller Capital Management L.P. | $3 | 0.00% | 2 | Shares | Defined | 2026-05-14 | ||||
| Mid Farther Finance Advisors, LLC | $1 | 0.00% | 1 | Shares | Sole | 2026-04-07 | ||||
| Large Federation des caisses Desjardins du Quebec | $1 | 0.00% | 1 | Shares | Defined | 2026-05-14 | ||||
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