Aptorum Group
APM
APM was delisted on the 17th of July, 2026.
7 hedge funds and large institutions have $164K invested in Aptorum Group in 2025 Q4 according to their latest regulatory filings, with 5 funds opening new positions, increasing their positions, 0 reducing their positions, and 1 closing their positions.
1,335% more capital invested
Capital invested by funds: $11.4K → $164K (+$152K)
400% more first-time investments, than exits
New positions opened: 5 | Existing positions closed: 1
133% more funds holding
Funds holding: 3 → 7 (+4)
0.23% more ownership
Funds ownership: 0.01% → 0.24% (+0.23%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$170K |
| 2 |
Two Sigma Investments
New York
|
+$25.6K |
| 3 |
Morgan Stanley
New York
|
+$19.5K |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$3.3K |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
+$587 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citigroup
New York
|
-$560 |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Citadel Advisors
Miami,
Florida
| $123K | +$170K | +11,558 | New |
|
|
2
Two Sigma Investments
New York
| $18.5K | +$25.6K | +1,741 | New |
|
|
3
Morgan Stanley
New York
| $14.1K | +$19.5K | +1,330 | New |
|
4
Osaic Holdings
Scottsdale,
Arizona
| $5.83K | – | – | – |
|
|
5
UBS Group
Zurich,
Switzerland
| $2.38K | +$3.3K | +225 | New |
|
|
6
BNP Paribas Financial Markets
Paris,
France
| $424 | +$587 | +40 | New |
|
|
SS
7
SBI Securities
Tokyo,
Japan
| $7 | – | – | – |
|
|
8
Citigroup
New York
| – | -$560 | -28 | Closed |
|
APM Hedge Fund Activity: Q4 2025 in Review
7 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Aptorum Group (APM) for Q4 2025, worth a combined $164K — up 1,335% from $11.4K a quarter earlier.
Buyers outnumbered sellers: 5 funds opened new APM positions and 1 closed out — a net gain of 4 holders — while 0 added to existing stakes and 0 trimmed.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $170K. The largest seller was Citigroup, exiting entirely with an estimated $560 sold.
- 7 institutional investors held Aptorum Group (APM) as of Q4 2025, up from 3 in Q3 2025.
- Funds reported $164K of Aptorum Group stock for Q4 2025, up 1,335% quarter-over-quarter.
- 5 funds opened new Aptorum Group positions in Q4 2025 and 1 closed out, a net change of +4 holders.
- The largest Aptorum Group buyer in Q4 2025 was Citadel Advisors, an estimated $170K added.
- The largest Aptorum Group seller in Q4 2025 was Citigroup, an estimated $560 sold.
Based on aggregated 13F filings for Q4 2025.