Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in FTEK held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | GRACE & WHITE INC /NY | 1.5M | $1.9M | +3.7% | 4.947% | 0.33% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 1.4M | $1.7M | +22.6% | 4.519% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 988K | $1.2M | — | 3.171% | 0.00% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 533K | $650K | +2.7% | 1.710% | 0.00% |
| 5 | Peapod Lane Capital LLC | 479K | $582K | +33.1% | 1.537% | 0.48% |
| 6 | BlackRock, Inc. | 410K | $501K | 0.0% | 1.317% | 0.00% |
| 7 | US BANCORP \DE\ | 305K | $372K | 0.0% | 0.978% | 0.00% |
| 8 | TWO SIGMA INVESTMENTS, LP | 238K | $290K | +88.7% | 0.764% | 0.00% |
| 9 | CITADEL ADVISORS LLC | 221K | $270K | -58.7% | 0.711% | 0.00% |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 170K | $207K | -34.5% | 0.545% | 0.00% |
| 11 | Beartown Capital Management, LLC | 147K | $179K | -8.3% | 0.471% | 0.13% |
| 12 | VANGUARD FIDUCIARY TRUST CO | 133K | $162K | — | 0.425% | 0.00% |
| 13 | STATE STREET CORP | 122K | $149K | 0.0% | 0.391% | 0.00% |
| 14 | XTX Topco Ltd | 118K | $144K | -33.7% | 0.380% | 0.00% |
| 15 | INTEGRITY WEALTH ADVISORS, INC. | 115K | $140K | +64.3% | 0.369% | 0.08% |
| 16 | ESSEX INVESTMENT MANAGEMENT CO LLC | 77K | $94K | 0.0% | 0.248% | 0.01% |
| 17 | JANE STREET GROUP, LLC | 71K | $86K | -77.0% | 0.227% | 0.00% |
| 18 | GROUP ONE TRADING, L.P. | 40K | $49K | -5.4% | 0.129% | 0.00% |
| 19 | Integrated Wealth Concepts LLC | 35K | $43K | — | 0.112% | 0.00% |
| 20 | NORTHERN TRUST CORP | 31K | $38K | 0.0% | 0.101% | 0.00% |
| 21 | Cresset Asset Management, LLC | 26K | $31K | 0.0% | 0.082% | 0.00% |
| 22 | MARSHALL WACE, LLP | 22K | $27K | -73.1% | 0.070% | 0.00% |
| 23 | DIMENSIONAL FUND ADVISORS LP | 19K | $24K | -62.1% | 0.062% | 0.00% |
| 24 | Chicago Partners Investment Group LLC | 17K | $23K | — | 0.055% | 0.00% |
| 25 | Legato Capital Management LLC | 18K | $22K | 0.0% | 0.058% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in FTEK — a direct measure of their conviction.
Filings activity in FTEK during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 45 | +0.0% | 21.42% | 6.96 pp | $9M | 25% |
| Q4 2025 | 45 | 6.3% | 28.38% | 23.68 pp | $12M | 45% |
| Q3 2025 | 48 | +33% | 52.06% | +15.42 pp | $22M | +42% |
| Q2 2025 | 36 | +2.9% | 36.64% | +20.39 pp | $15M | +125% |
| Q1 2025 | 35 | 10% | 16.25% | 0.68 pp | $7M | 4.0% |
| Q4 2024 | 39 | +8.3% | 16.93% | +1.03 pp | $7M | +6.5% |
| Q3 2024 | 36 | +9.1% | 15.90% | +0.25 pp | $7M | +1.6% |
| Q2 2024 | 33 | — | 15.65% | — | $7M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying FTEK stock.
Based on Q1 2026 13F filings, institutional ownership of Fuel Tech, Inc. stands at 21.4%, held across 45 reporting institutions.
GRACE & WHITE INC /NY is the largest reported institutional holder of FTEK, with approximately 1,541,307 shares worth $0.00B as of Q1 2026.
Yes — 5 widely-followed marquee investors appear among the top 25 institutional holders of FTEK, including RENAISSANCE TECHNOLOGIES LLC, TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, JANE STREET GROUP, LLC.
Our composite Smart Money Score for FTEK is 57 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
10 institutions opened new positions in FTEK during Q1 2026, while 10 fully exited. 4 added to existing positions and 30 trimmed.
FTEK institutional ownership fell by 6.96 percentage points quarter-over-quarter, with a net change of +0 holders.
The top 10 institutions account for 85.8% of all reported 13F value in FTEK, and the top 25 account for 99.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Fuel Tech, Inc. (FTEK) Institutional Ownership