New Positions
11 managers initiated
Top five by reported value
- Beartown Capital Management, LLC$249.6K
- TWO SIGMA INVESTMENTS, LP$196.8K
- MARSHALL WACE, LLP$126.4K
- TWO SIGMA ADVISERS, LP$105.3K
- TWO SIGMA SECURITIES, LLC$22.7K
Fuel Tech Inc NASDAQ NMS - GLOBAL MARKET:FTEK
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
11 new11 added23 reduced15 exited
Total Institutional Holders
45
as of 2025-12-31
Top Holder
GRACE & WHITE INC /NY
$2.3M
Largest QoQ Increase
CITADEL ADVISORS LLC
+283,894 sh
Largest QoQ Decrease
EAM Investors, LLC
-338,712 sh
New Positions(11)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Beartown Capital Management, LLC | 160,027 | +160,027 | $249.6K | +$249.6K | — |
| TWO SIGMA INVESTMENTS, LP | 126,160 | +126,160 | $196.8K | +$196.8K | — |
| MARSHALL WACE, LLP | 81,011 | +81,011 | $126.4K | +$126.4K | — |
| TWO SIGMA ADVISERS, LP | 67,500 | +67,500 | $105.3K | +$105.3K | — |
| TWO SIGMA SECURITIES, LLC | 14,583 | +14,583 | $22.7K | +$22.7K | — |
| Quadrature Capital Ltd | 11,579 | +11,579 | $18.1K | +$18.1K | — |
| Tower Research Capital LLC (TRC) | 4,288 | +4,288 | $6.7K | +$6.7K | — |
| MORGAN STANLEY | 21 | +21 | $33 | +$33 | — |
| FMR LLC | 18 | +18 | $28 | +$28 | — |
| Virtu Financial LLC | 17,254 | +17,254 | $27 | +$27 | — |
| Motiv8 Investments LLC | 100 | +100 | $0 | $0 | — |
Added To(11)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 1,126,003 | +112,139 | $1.8M | -$1.3M | 11.1% |
| RENAISSANCE TECHNOLOGIES LLC | 1,147,995 | +249,089 | $1.8M | -$905.8K | 27.7% |
| Peapod Lane Capital LLC | 359,643 | +2,705 | $561.0K | -$509.8K | 0.8% |
| JANE STREET GROUP, LLC | 307,382 | +70,460 | $479.5K | -$231.3K | 29.7% |
| STATE STREET CORP | 121,846 | +8,100 | $190.1K | -$151.2K | 7.1% |
| XTX Topco Ltd | 178,303 | +122,291 | $278.2K | +$110.1K | 218.3% |
| CITADEL ADVISORS LLC | 535,817 | +283,894 | $835.9K | +$80.1K | 112.7% |
| AMERICAN CENTURY COMPANIES INC | 38,543 | +1,988 | $60.1K | -$49.5K | 5.4% |
| GROUP ONE TRADING, L.P. | 42,509 | +12,303 | $66.3K | -$24.3K | 40.7% |
| HighTower Advisors, LLC | 10,440 | +40 | $16.3K | -$14.9K | 0.4% |
| BANK OF AMERICA CORP /DE/ | 280 | +63 | $437 | -$214 | 29.0% |
Reduced(23)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| GRACE & WHITE INC /NY | 1,485,883 | -5,800 | $2.3M | -$2.2M | -0.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 518,939 | -4,879 | $809.6K | -$762.0K | -0.9% |
| BlackRock, Inc. | 410,364 | 0 | $640.2K | -$590.9K | 0.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 259,276 | -40,810 | $404.5K | -$495.8K | -13.6% |
| US BANCORP \DE\ | 304,776 | 0 | $475.5K | -$438.9K | 0.0% |
| INTEGRITY WEALTH ADVISORS, INC. | 70,000 | 0 | $95.2K | -$114.8K | 0.0% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 77,250 | 0 | $120.5K | -$111.2K | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 51,199 | -3,202 | $79.7K | -$83.2K | -5.9% |
| NewEdge Advisors, LLC | 2,327 | -15,326 | $3.6K | -$49.3K | -86.8% |
| NORTHERN TRUST CORP | 31,435 | 0 | $49.0K | -$45.3K | 0.0% |
| Cresset Asset Management, LLC | 25,500 | 0 | $39.8K | -$36.7K | 0.0% |
| Legato Capital Management LLC | 18,165 | 0 | $28.3K | -$26.2K | 0.0% |
| WELLS FARGO & COMPANY/MN | 1,150 | -2,500 | $1.8K | -$9.2K | -68.5% |
| Founders Capital Management | 5,000 | 0 | $7.8K | -$7.2K | 0.0% |
| SIMPLEX TRADING, LLC | 3,299 | -39,202 | $5.1K | +$5.0K | -92.2% |
| New England Capital Financial Advisors LLC | 2,000 | 0 | $3.1K | -$2.9K | 0.0% |
| ADVISOR GROUP HOLDINGS, INC. | 1,200 | 0 | $1.9K | -$1.6K | 0.0% |
| SBI Securities Co., Ltd. | 719 | -110 | $1.1K | -$1.4K | -13.3% |
| Steward Partners Investment Advisory, LLC | 600 | 0 | $936 | -$864 | 0.0% |
| BRYN MAWR TRUST Co | 500 | 0 | $780 | -$720 | 0.0% |
| GSA CAPITAL PARTNERS LLP | 32,011 | -4,479 | $50 | -$59 | -12.3% |
| Covestor Ltd | 13,187 | 0 | $21 | -$19 | 0.0% |
| CKW FINANCIAL GROUP | 200 | 0 | $0 | -$1 | 0.0% |
Sold Out(15)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| EAM Investors, LLC | 0 | -338,712 | $0 | -$1.0M | — |
| Mercuria Capital Strategies, LLC | 0 | -240,000 | $0 | -$720.0K | — |
| Murchinson Ltd. | 0 | -150,000 | $0 | -$450.0K | — |
| WOLVERINE TRADING, LLC | 0 | -74,300 | $0 | -$217.7K | — |
| BOOTHBAY FUND MANAGEMENT, LLC | 0 | -41,251 | $0 | -$123.8K | — |
| Integrated Wealth Concepts LLC | 0 | -35,000 | $0 | -$105.0K | — |
| GOLDMAN SACHS GROUP INC | 0 | -31,300 | $0 | -$93.9K | — |
| Advisory Services Network, LLC | 0 | -21,627 | $0 | -$64.9K | — |
| Cubist Systematic Strategies, LLC | 0 | -14,709 | $0 | -$44.1K | — |
| LexAurum Advisors, LLC | 0 | -14,160 | $0 | -$42.5K | — |
| PRELUDE CAPITAL MANAGEMENT, LLC | 0 | -13,233 | $0 | -$39.7K | — |
| CITIGROUP INC | 0 | -474 | $0 | -$1.4K | — |
| Spire Wealth Management | 0 | -200 | $0 | -$600 | — |
| UBS Group AG | 0 | -97 | $0 | -$291 | — |
| HRT FINANCIAL LP | 0 | -23,329 | $0 | -$69 | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| GRACE & WHITE INC /NY | 1,485,883 | $2.3M | -5,800 | -0.4% |
| RENAISSANCE TECHNOLOGIES LLC | 1,147,995 | $1.8M | +249,089 | 27.7% |
| VANGUARD GROUP INC | 1,126,003 | $1.8M | +112,139 | 11.1% |
| CITADEL ADVISORS LLC | 535,817 | $835.9K | +283,894 | 112.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 518,939 | $809.6K | -4,879 | -0.9% |
| BlackRock, Inc. | 410,364 | $640.2K | 0 | 0.0% |
| Peapod Lane Capital LLC | 359,643 | $561.0K | +2,705 | 0.8% |
| JANE STREET GROUP, LLC | 307,382 | $479.5K | +70,460 | 29.7% |
| US BANCORP \DE\ | 304,776 | $475.5K | 0 | 0.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 259,276 | $404.5K | -40,810 | -13.6% |
| XTX Topco Ltd | 178,303 | $278.2K | +122,291 | 218.3% |
| Beartown Capital Management, LLC | 160,027 | $249.6K | +160,027 | — |
| TWO SIGMA INVESTMENTS, LP | 126,160 | $196.8K | +126,160 | — |
| STATE STREET CORP | 121,846 | $190.1K | +8,100 | 7.1% |
| MARSHALL WACE, LLP | 81,011 | $126.4K | +81,011 | — |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 77,250 | $120.5K | 0 | 0.0% |
| TWO SIGMA ADVISERS, LP | 67,500 | $105.3K | +67,500 | — |
| INTEGRITY WEALTH ADVISORS, INC. | 70,000 | $95.2K | 0 | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 51,199 | $79.7K | -3,202 | -5.9% |
| GROUP ONE TRADING, L.P. | 42,509 | $66.3K | +12,303 | 40.7% |
New & Closed Positions this quarter
Closed Positions
15 managers exited
Top five by prior-quarter value
- EAM Investors, LLC$1.0M
- Mercuria Capital Strategies, LLC$720.0K
- Murchinson Ltd.$450.0K
- WOLVERINE TRADING, LLC$217.7K
- BOOTHBAY FUND MANAGEMENT, LLC$123.8K
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for FTEK against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.