Lightbridge Corporation (LTBR) Ownership
LTBR ownership summary
as of October 18, 2026- Institutions
- 46.6% of shares outstanding
- Insiders
- 6.28% of shares outstanding
- Shares outstanding
- 35.2M
- Float
- 33.2M shares available to trade
- Short interest
- 12.29% 4.1M shares short
- Days to cover
- 5.02 short interest down 16.1% vs prior month
- Institutions 46.57%
- Insiders 6.28%
- Other investors 47.15%
LTBR top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | State Street Corp | 8.03% | 2.8M | $14.7M | +448,138 (+18.8%) | June 30, 2026 |
| 2 | BlackRock Inc | 7.29% | 2.6M | $13.4M | +480,160 (+23.0%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 4.24% | 1.5M | $7.8M | +121,392 (+8.8%) | June 30, 2026 |
| 4 | Exchange Traded Concepts, LLC | 3.17% | 1.1M | $5.8M | +35,646 (+3.3%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 2.49% | 877K | $4.6M | +152,964 (+21.1%) | June 30, 2026 |
| 6 | Millennium Management LLC | 1.98% | 699K | $3.6M | +463,790 (+197.3%) | June 30, 2026 |
| 7 | UBS Group AG | 1.54% | 542K | $2.8M | −94,941 (−14.9%) | June 30, 2026 |
| 8 | BNP Paribas Arbitrage, SA | 1.34% | 472K | $2.5M | −942,103 (−66.6%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 0.96% | 338K | $1.8M | −315,500 (−48.2%) | June 30, 2026 |
| 10 | Northern Trust Corp | 0.83% | 293K | $1.5M | +40,744 (+16.1%) | June 30, 2026 |
| 11 | Pacer Advisors, INC. | 0.66% | 231K | $1.2M | +66,957 (+40.7%) | June 30, 2026 |
| 12 | Vanguard Portfolio Management, LLC | 0.65% | 230K | $1.2M | +15,475 (+7.2%) | June 30, 2026 |
| 13 | Vanguard Fiduciary Trust Co | 0.63% | 222K | $1.2M | −5,741 (−2.5%) | June 30, 2026 |
| 14 | Tortoise Investment Management, LLC | 0.61% | 216K | $1.1M | — | June 30, 2026 |
| 15 | D. E. Shaw & Co LP | 0.47% | 167K | $867,538 | +110,998 (+199.9%) | June 30, 2026 |
| 16 | Trexquant Investment LP | 0.31% | 109K | $567,692 | +108,962 (0.0%) | June 30, 2026 |
| 17 | Charles Schwab Investment Management Inc | 0.30% | 105K | $547,133 | +19,160 (+22.3%) | June 30, 2026 |
| 18 | Susquehanna International Group, LLP | 0.27% | 96K | $498,357 | +7,609 (+8.6%) | June 30, 2026 |
| 19 | Morgan Stanley - Brokerage Accounts | 0.26% | 90K | $468,186 | −99,965 (−52.7%) | June 30, 2026 |
| 20 | Bank of New York Mellon Corp | 0.24% | 86K | $445,465 | +21,712 (+34.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 2.1M shares and 5 cut 1.5M.
LTBR top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Global X Uranium ETF | 5.85% | 2.1M | $10.7M | −4,557 (−0.2%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.05% | 1.1M | $5.6M | — | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 2.53% | 892K | $4.6M | −10,304 (−1.1%) | September 30, 2026 |
| 4 | Range Nuclear Renaissance ETF | 1.11% | 392K | $2.0M | — | September 30, 2026 |
| 5 | Fidelity Small Cap Index | 1.07% | 376K | $2.0M | +2,044 (+0.5%) | July 31, 2026 |
| 6 | Pacer Data & Infrastructure Rl EsttETF | 0.73% | 259K | $1.3M | −15,769 (−5.7%) | September 30, 2026 |
| 7 | iShares Russell 2000 Value ETF | 0.67% | 236K | $1.2M | +358 (+0.2%) | September 30, 2026 |
| 8 | Vanguard Russell 2000 ETF | 0.57% | 200K | $1.0M | +3,406 (+1.7%) | September 30, 2026 |
| 9 | Fidelity Extended Market Index | 0.51% | 178K | $929,719 | −1,964 (−1.1%) | August 31, 2026 |
| 10 | iShares Micro-Cap ETF | 0.31% | 108K | $564,311 | −747 (−0.7%) | September 30, 2026 |
| 11 | Themes Uranium & Nuclear ETF | 0.25% | 89K | $463,310 | — | September 30, 2026 |
| 12 | Schwab Small Cap Index | 0.24% | 83K | $434,681 | — | August 31, 2026 |
| 13 | Inspire Small/Mid Cap ETF | 0.22% | 77K | $403,499 | — | September 30, 2026 |
| 14 | iShares Russell 2000 Growth ETF | 0.21% | 76K | $393,574 | −96 (−0.1%) | September 30, 2026 |
| 15 | Fidelity Nasdaq Composite Index | 0.20% | 69K | $359,907 | +49,091 (+245.6%) | August 31, 2026 |
| 16 | iShares Russell 2000 Small-Cap Idx Instl | 0.18% | 64K | $333,815 | — | August 31, 2026 |
| 17 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.17% | 60K | $314,866 | −4,221 (−6.5%) | September 30, 2026 |
| 18 | Fidelity Total Market Index | 0.17% | 60K | $312,433 | +170 (+0.3%) | August 31, 2026 |
| 19 | Fidelity Series Total Market Index | 0.15% | 52K | $273,087 | +3,172 (+6.4%) | August 31, 2026 |
| 20 | WisdomTree Uranium & Nucler Ey ETF $ Acc | 0.15% | 52K | $269,414 | −320 (−0.6%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
LTBR insider transactions
latest 15| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-29 | Andrey Mushakov | Sell | $16.57 | 30,289 | $501,889 |
| 2026-01-09 | Jesse L Funches | Sell | $16.96 | 1,449 | $24,575 |
| 2026-01-06 | Sweta Chakraborty | Sell | $15.68 | 1,245 | $19,522 |
| 2026-01-02 | Sweta Chakraborty | Sell | $12.88 | 1,947 | $25,077 |
| 2025-12-01 | Sweta Chakraborty | Sell | $15.47 | 1,948 | $30,136 |
| 2025-11-03 | Sweta Chakraborty | Sell | $26.73 | 1,948 | $52,070 |
| 2025-10-15 | Seth Grae | Sell | $28.07 | 32,296 | $906,549 |
| 2025-10-13 | Seth Grae | Sell | $26.01 | 20,600 | $535,806 |
| 2025-10-10 | Andrey Mushakov | Sell | $25.06 | 25,093 | $628,831 |
| 2025-10-10 | Seth Grae | Sell | $25.84 | 7,616 | $196,797 |
| 2025-10-08 | Sweta Chakraborty | Sell | $22.89 | 1,246 | $28,521 |
| 2025-10-07 | Jesse L Funches | Sell | $22.67 | 1,448 | $32,826 |
| 2025-09-22 | Andrey Mushakov | Sell | $20.04 | 17,598 | $352,664 |
| 2025-08-15 | Sweta Chakraborty | Sell | $15.15 | 20,000 | $303,000 |
| 2025-05-12 | Jesse L Funches | Sell | $9.75 | 6,250 | $60,938 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
LTBR shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns LTBR
Institutional investors own 46.6% of Lightbridge's shares and insiders 6.28%. The largest holder is State Street Corp with 8.03% of the shares (2.8M), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 5 reduced their stake in the latest filings. Short interest is 12.29% of the float, or 5.02 days of average trading volume. The share count rose 10,984.1% since 2014.
Related: LTBR key metrics. See the LTBR stock overview for the latest quote and news.
LTBR ownership FAQ
Who owns the most Lightbridge stock?
The largest shareholders of Lightbridge are State Street Corp (8.03%), BlackRock Inc (7.29%), Vanguard Capital Management, LLC (4.24%), Exchange Traded Concepts, LLC (3.17%), Geode Capital Management, LLC (2.49%).
What percentage of Lightbridge is owned by institutions?
Institutions hold 46.6% of Lightbridge's shares outstanding; insiders hold 6.28%.
Which funds own Lightbridge?
The largest fund holders of Lightbridge are Global X Uranium ETF (5.85%), Vanguard MStar Total Stk Mkt Idx Invest (3.05%), iShares Russell 2000 ETF (2.53%), Range Nuclear Renaissance ETF (1.11%), Fidelity Small Cap Index (1.07%).
What is Lightbridge's short interest?
4.1M shares of Lightbridge were sold short, 12.29% of the float; at the average daily volume it would take 5.02 days to cover.
Are insiders buying or selling Lightbridge?
Of the latest 15 reported insider transactions in Lightbridge (since May 12, 2025), 0 were purchases and 15 were sales.
How many shares of Lightbridge are outstanding?
Lightbridge has 35.2M shares outstanding, of which 33.2M are in the public float.