Comparable stake leader
CITADEL ADVISORS LLC
SEC ownership of Aptorum Group Ltd
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001734005.
Disclosed value leader
CITADEL ADVISORS LLC
Comparable rows
0/8
Latest evidence
31 Mar 2026
- Public ticker
- APM on Nasdaq
- Parsed ownership sources
-
13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
CITADEL ADVISORS LLC
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001734005
- Issuer location
- London, United Kingdom
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Aptorum Group Ltd (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
CITADEL ADVISORS LLC
Disclosed value leader
CITADEL ADVISORS LLC
Comparable rows
0/8
Latest evidence
31 Mar 2026
13F
Highest disclosed value: $73,557
8 rows are not safely comparable across share classes.
Quick read
CITADEL ADVISORS LLC has the largest disclosed position value at $73.6K.
0 of 8 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens CITADEL ADVISORS LLC's linked filing trail.
Disclosed position value
Top 5
CITADEL ADVISORS LLC
$73.6K
SUSQUEHANNA INTERNATIONAL GROUP, LLP
$13.4K
XTX Topco Ltd
$12K
MORGAN STANLEY
$10.6K
RENAISSANCE TECHNOLOGIES LLC
$9.4K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 8 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC |
13F
Company
|
—
class O/S missing
|
$73,557
92,420 shares
|
— | 31 Mar 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
Company
|
—
class O/S missing
|
$13,353
16,777 shares
|
— | 31 Mar 2026 |
| XTX Topco Ltd |
13F
Company
|
—
class O/S missing
|
$11,987
15,061 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
—
class O/S missing
|
$10,555
13,262 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
class O/S missing
|
$9,422
11,838 shares
|
— | 31 Mar 2026 |
| OSAIC HOLDINGS, INC. |
13F
Company
|
—
class O/S missing
|
$4,400
5,500 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
—
class O/S missing
|
$1,297
1,629 shares
|
— | 31 Mar 2026 |
| SBI Securities Co., Ltd. |
13F
Company
|
—
class O/S missing
|
$6
7 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 18 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Recent insider transactions for Aptorum Group Ltd
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.