Drw Securities, LLC
· Exited
Change
−74K
Δ Own
−100.0%
Date
Q1 2026
MB
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Drw Securities, LLC
· Exited
Change
−74K
Δ Own
−100.0%
Date
Q1 2026
|
Drw Securities, LLC | Exited· Q1 2026 | – | −74K | −100.0% | Q1 2026 | |||||
|
Kestra Advisory Services, LLC
· Added
Change
+65K
Date
Q1 2026
|
Kestra Advisory Services, LLC | Added· Q1 2026 | – | +65K | – | Q1 2026 | |||||
|
Geode
· Added
Change
+61K
Date
Q1 2026
|
Geode | Added· Q1 2026 | – | +61K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
Change
−32K
Δ Own
−37.2%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | – | −32K | −37.2% | Q1 2026 | |||||
|
Xtx Topco Ltd
· Exited
Change
−24K
Δ Own
−100.0%
Date
Q1 2026
|
Xtx Topco Ltd | Exited· Q1 2026 | – | −24K | −100.0% | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Reduced
Change
−23K
Δ Own
−58.2%
Date
Q1 2026
|
Two Sigma Investments, LP | Reduced· Q1 2026 | – | −23K | −58.2% | Q1 2026 | |||||
|
Jane Street Group, LLC
· Exited
Change
−14K
Δ Own
−100.0%
Date
Q1 2026
|
Jane Street Group, LLC | Exited· Q1 2026 | – | −14K | −100.0% | Q1 2026 | |||||
|
Gsa Capital Partners LLP
· Exited
Change
−13K
Δ Own
−100.0%
Date
Q1 2026
|
Gsa Capital Partners LLP | Exited· Q1 2026 | – | −13K | −100.0% | Q1 2026 | |||||
|
Cfo4life Group, LLC
· Added
Change
+8K
Date
Q1 2026
|
Cfo4life Group, LLC | Added· Q1 2026 | – | +8K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+4K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +4K | – | Q1 2026 | |||||
|
Sbi Securities Co., Ltd.
· Reduced
Change
−2K
Date
Q1 2026
|
Sbi Securities Co., Ltd. | Reduced· Q1 2026 | – | −2K | – | Q1 2026 | |||||
|
Tower Research Capital LLC (trc)
· Added
Change
+959
Date
Q1 2026
|
Tower Research Capital LLC (trc) | Added· Q1 2026 | – | +959 | – | Q1 2026 | |||||
|
Harbour Investments, Inc.
· Exited
Change
−76
Δ Own
−100.0%
Date
Q1 2026
|
Harbour Investments, Inc. | Exited· Q1 2026 | – | −76 | −100.0% | Q1 2026 | |||||
|
Bank of America Corp
· Exited
Change
−54
Δ Own
−100.0%
Date
Q1 2026
|
Bank of America Corp | Exited· Q1 2026 | – | −54 | −100.0% | Q1 2026 | |||||
|
Vanguard
· Reduced
Change
−39
Date
Q1 2026
|
Vanguard | Reduced· Q1 2026 | – | −39 | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Litchman Manuel Md
· Director
Tax withholding or exercise payment (F)
-$14
|
Litchman Manuel Md | Director | Tax withholding or exercise payment (F) | $0.75 | -19 | -$14 | 2K | – | Apr 24, 2026 | Apr 27, 2026 | |||||||||
|
Fortress Biotech, Inc.
· 10% Owner
Grant (A)
278K
|
Fortress Biotech, Inc. | 10% Owner | Grant (A) | – | 278K | – | 537K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Herskowitz Neil
· Director
Sell
−$237
|
Herskowitz Neil | Director | Sell | $0.96 | −247 | −$237 | 145 | – | Dec 30, 2025 | Dec 30, 2025 | |||||||||
|
Chill Adam J.
· Director
Sell
−$4
|
Chill Adam J. | Director | Sell | $0.95 | −4 | −$4 | 375 | – | Dec 30, 2025 | Dec 30, 2025 | |||||||||
|
Jin David
· Director
Buy
+$237
|
Jin David | Director | Buy | $0.96 | +247 | +$237 | 286 | – | Dec 30, 2025 | Dec 30, 2025 | |||||||||
|
Fortress Biotech, Inc.
· 10% Owner
Grant (A)
59K
|
Fortress Biotech, Inc. | 10% Owner | Grant (A) | – | 59K | – | 258K | – | Sep 29, 2025 | Oct 1, 2025 | |||||||||
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18 reporting institutions disclosed MBIO position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.