Lightbridge
LTBR
118 hedge funds and large institutions have $171M invested in Lightbridge in 2025 Q4 according to their latest regulatory filings, with 27 funds opening new positions, 48 increasing their positions, 23 reducing their positions, and 18 closing their positions.
109% more repeat investments, than reductions
Existing positions increased: 48 | Existing positions reduced: 23
50% more first-time investments, than exits
New positions opened: 27 | Existing positions closed: 18
17% more call options, than puts
Call options by funds: $7.97M | Put options by funds: $6.79M
7% more funds holding
Funds holding: 110 → 118 (+8)
4.48% less ownership
Funds ownership: 45.88% → 41.4% (-4.5%)
32% less capital invested
Capital invested by funds: $252M → $171M (-$81.4M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
State Street
Boston,
Massachusetts
|
+$27M |
| 2 |
BlackRock
New York
|
+$10M |
| 3 |
Renaissance Technologies
New York
|
+$8.84M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$6.56M |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
+$2.77M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$8.44M |
| 2 |
Two Sigma Investments
New York
|
-$7.27M |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$6.08M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$6.07M |
| 5 |
Baird Financial Group
Milwaukee,
Wisconsin
|
-$5.56M |
LTBR Hedge Fund Activity: Q4 2025 in Review
118 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Lightbridge (LTBR) for Q4 2025, worth a combined $171M — down 32% from $252M a quarter earlier.
Buyers outnumbered sellers: 27 funds opened new LTBR positions and 18 closed out — a net gain of 9 holders — while 48 added to existing stakes and 23 trimmed.
The largest buyer was State Street, adding an estimated $27M. The largest seller was Driehaus Capital Management, exiting entirely with an estimated $8.44M sold.
- 118 institutional investors held Lightbridge (LTBR) as of Q4 2025, up from 110 in Q3 2025.
- Funds reported $171M of Lightbridge stock for Q4 2025, down 32% quarter-over-quarter.
- 27 funds opened new Lightbridge positions in Q4 2025 and 18 closed out, a net change of +9 holders.
- The largest Lightbridge buyer in Q4 2025 was State Street, an estimated $27M added.
- The largest Lightbridge seller in Q4 2025 was Driehaus Capital Management, an estimated $8.44M sold.
Based on aggregated 13F filings for Q4 2025.