Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ESP held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | RENAISSANCE TECHNOLOGIES LLC | 103K | $5.7M | -0.1% | 3.445% | 0.01% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 94K | $5.2M | -5.6% | 3.122% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 85K | $4.7M | β | 2.837% | 0.00% |
| 4 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 62K | $3.4M | 0.0% | 2.065% | 0.00% |
| 5 | De Lisle Partners LLP | 56K | $3.1M | 0.0% | 1.877% | 0.37% |
| 6 | AMERICAN CENTURY COMPANIES INC | 53K | $2.9M | +45.6% | 1.772% | 0.00% |
| 7 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 31K | $1.7M | +14.7% | 1.031% | 0.01% |
| 8 | MILLENNIUM MANAGEMENT LLC | 28K | $1.5M | β | 0.919% | 0.00% |
| 9 | TWO SIGMA INVESTMENTS, LP | 26K | $1.4M | +29.1% | 0.870% | 0.00% |
| 10 | SEI INVESTMENTS CO | 25K | $1.4M | β | 0.833% | 0.00% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 24K | $1.4M | -1.0% | 0.816% | 0.00% |
| 12 | RITHOLTZ WEALTH MANAGEMENT | 24K | $1.3M | +35.3% | 0.804% | 0.02% |
| 13 | EAM Investors, LLC | 21K | $1.1M | β | 0.685% | 0.13% |
| 14 | CITADEL ADVISORS LLC | 20K | $1.1M | β | 0.677% | 0.00% |
| 15 | Sidoxia Capital Management, LLC | 19K | $1.0M | β | 0.622% | 0.89% |
| 16 | STEEL PARTNERS HOLDINGS L.P. | 17K | $921K | 0.0% | 0.555% | 0.96% |
| 17 | SummerHaven Investment Management, LLC | 16K | $888K | -10.8% | 0.535% | 0.54% |
| 18 | WELLS FARGO & COMPANY/MN | 16K | $859K | -22.5% | 0.517% | 0.00% |
| 19 | NAPLES GLOBAL ADVISORS, LLC | 15K | $825K | +3.0% | 0.497% | 0.06% |
| 20 | Sage Investment Advisers LLC | 14K | $823K | +0.0% | 0.482% | 0.61% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 13K | $725K | β | 0.437% | 0.00% |
| 22 | Bank of New York Mellon Corp | 12K | $661K | -0.9% | 0.398% | 0.00% |
| 23 | STATE STREET CORP | 11K | $604K | -13.8% | 0.364% | 0.00% |
| 24 | Man Group plc | 11K | $600K | +65.5% | 0.361% | 0.00% |
| 25 | GOLDMAN SACHS GROUP INC | 11K | $594K | β | 0.358% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in ESP β a direct measure of their conviction.
Filings activity in ESP during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 59 | +16% | 28.54% | +8.06 pp | $51M | +39% |
| Q4 2025 | 51 | +0.0% | 20.48% | +4.61 pp | $36M | +29% |
| Q3 2025 | 51 | +4.1% | 15.87% | 1.03 pp | $28M | 6.1% |
| Q2 2025 | 49 | +44% | 16.90% | +8.41 pp | $30M | +99% |
| Q1 2025 | 34 | 5.6% | 8.49% | 1.75 pp | $15M | 17% |
| Q4 2024 | 36 | +16% | 10.24% | +2.12 pp | $18M | +26% |
| Q3 2024 | 31 | +15% | 8.12% | +2.94 pp | $14M | +57% |
| Q2 2024 | 27 | β | 5.18% | β | $9M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying ESP stock.
Based on Q1 2026 13F filings, institutional ownership of Espey Mfg. & Electronics Corp. stands at 28.5%, held across 59 reporting institutions.
RENAISSANCE TECHNOLOGIES LLC is the largest reported institutional holder of ESP, with approximately 103,212 shares worth $0.01B as of Q1 2026.
Yes β 4 widely-followed marquee investors appear among the top 25 institutional holders of ESP, including RENAISSANCE TECHNOLOGIES LLC, MILLENNIUM MANAGEMENT LLC, TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for ESP is 75 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
18 institutions opened new positions in ESP during Q1 2026, while 10 fully exited. 37 added to existing positions and 4 trimmed.
ESP institutional ownership rose by 8.06 percentage points quarter-over-quarter, with a net change of +8 holders.
The top 10 institutions account for 61.5% of all reported 13F value in ESP, and the top 25 account for 88.2%.
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.
Espey Mfg. & Electronics Corp. (ESP) Institutional Ownership