Ranked by reported Q2 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 | $3.4M | 0.0% | 4.946% | 0.54% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 1.1M | $2.4M | -21.7% | 3.537% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 1.0M | $2.2M | +1.8% | 3.227% | 0.00% |
| 4 | Peapod Lane Capital LLC | 821K | $1.8M | +71.4% | 2.633% | 1.22% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 523K | $1.2M | -1.8% | 1.678% | 0.00% |
| 6 | BlackRock, Inc. | 496K | $1.1M | +21.0% | 1.593% | 0.00% |
| 7 | US BANCORP \DE\ | 305K | $674K | 0.0% | 0.978% | 0.00% |
| 8 | TWO SIGMA INVESTMENTS, LP | 168K | $372K | -29.2% | 0.540% | 0.00% |
| 9 | Beartown Capital Management, LLC | 147K | $324K | 0.0% | 0.471% | 0.14% |
| 10 | VANGUARD FIDUCIARY TRUST CO | 133K | $295K | +0.7% | 0.428% | 0.00% |
| 11 | STATE STREET CORP | 122K | $269K | 0.0% | 0.391% | 0.00% |
| 12 | Marquette Asset Management, LLC | 111K | $244K | — | 0.355% | 0.03% |
| 13 | JANE STREET GROUP, LLC | 109K | $242K | +54.6% | 0.351% | 0.00% |
| 14 | THOMPSON DAVIS & CO., INC. | 86K | $190K | — | 0.275% | 0.11% |
| 15 | ESSEX INVESTMENT MANAGEMENT CO LLC | 77K | $171K | -0.1% | 0.248% | 0.02% |
| 16 | NORTHERN TRUST CORP | 60K | $133K | +91.9% | 0.194% | 0.00% |
| 17 | Rothschild Wealth LLC | 40K | $88K | — | 0.128% | 0.01% |
| 18 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 36K | $79K | -78.9% | 0.115% | 0.00% |
| 19 | LexAurum Advisors, LLC | 20K | $45K | +42.4% | 0.065% | 0.01% |
| 20 | CITADEL ADVISORS LLC | 19K | $42K | -91.4% | 0.061% | 0.00% |
| 21 | Legato Capital Management LLC | 18K | $40K | 0.0% | 0.058% | 0.00% |
| 22 | UBS Group AG | 18K | $40K | +1801400.0% | 0.058% | 0.00% |
| 23 | GROUP ONE TRADING LLC | 14K | $31K | -65.4% | 0.045% | 0.00% |
| 24 | DIMENSIONAL FUND ADVISORS LP | 13K | $29K | -30.9% | 0.043% | 0.00% |
| 25 | Scientech Research LLC | 11K | $25K | — | 0.037% | 0.02% |
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 Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new FTEK position in Q2 2026
Institutions that fully closed their FTEK position in Q2 2026
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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 44 | 4.3% | 23.61% | 0.79 pp | $16M | +74% |
| Q1 2026 | 46 | +2.2% | 24.40% | 0.31 pp | $9M | 25% |
| Q4 2025 | 45 | 8.2% | 24.71% | +0.74 pp | $12M | 46% |
| Q3 2025 | 49 | +36% | 23.97% | +4.27 pp | $22M | +44% |
| Q2 2025 | 36 | +2.9% | 19.70% | 1.60 pp | $15M | +125% |
| Q1 2025 | 35 | 10% | 21.30% | 0.73 pp | $7M | 4.0% |
| Q4 2024 | 39 | +8.3% | 22.03% | +1.41 pp | $7M | +6.5% |
| Q3 2024 | 36 | — | 20.62% | — | $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 Q2 2026 13F filings, institutional ownership of Fuel Tech, Inc. stands at 23.6%, held across 44 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 Q2 2026.
Yes — 5 widely-followed marquee investors appear among the top 25 institutional holders of FTEK, including RENAISSANCE TECHNOLOGIES LLC, TWO SIGMA INVESTMENTS, LP, JANE STREET GROUP, LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for FTEK is 56 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
6 institutions opened new positions in FTEK during Q2 2026, while 8 fully exited. 32 added to existing positions and 4 trimmed.
FTEK institutional ownership fell by 0.79 percentage points quarter-over-quarter, with a net change of -2 holders.
The top 10 institutions account for 88.7% 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