Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in PKOH held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | GAMCO INVESTORS, INC. ET AL | 1.2M | $29.7M | -2.8% | 8.585% | 0.29% |
| 2 | PRIVATE MANAGEMENT GROUP INC | 1.0M | $24.6M | -0.9% | 7.105% | 0.71% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 837K | $20.1M | +0.8% | 5.813% | 0.00% |
| 4 | BlackRock, Inc. | 629K | $15.1M | +0.0% | 4.368% | 0.00% |
| 5 | GABELLI FUNDS LLC | 512K | $12.3M | -0.1% | 3.557% | 0.08% |
| 6 | First Eagle Investment Management, LLC | 481K | $11.6M | +10.5% | 3.342% | 0.02% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 421K | $10.1M | — | 2.924% | 0.00% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 234K | $5.6M | +3.3% | 1.626% | 0.00% |
| 9 | AMERICAN CENTURY COMPANIES INC | 234K | $5.6M | +6.1% | 1.627% | 0.00% |
| 10 | Teton Advisors, LLC | 154K | $3.7M | 0.0% | 1.072% | 2.61% |
| 11 | STATE STREET CORP | 150K | $3.6M | +1.4% | 1.043% | 0.00% |
| 12 | JB CAPITAL PARTNERS LP | 122K | $2.9M | +3.7% | 0.847% | 0.50% |
| 13 | Bank of New York Mellon Corp | 111K | $2.7M | -1.8% | 0.770% | 0.00% |
| 14 | CM WEALTH ADVISORS LLC | 110K | $2.7M | 0.0% | 0.767% | 0.57% |
| 15 | NORTHERN TRUST CORP | 73K | $1.7M | +6.0% | 0.505% | 0.00% |
| 16 | TWO SIGMA INVESTMENTS, LP | 72K | $1.7M | +70.8% | 0.497% | 0.00% |
| 17 | VANGUARD PORTFOLIO MANAGEMENT LLC | 66K | $1.6M | — | 0.459% | 0.00% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 61K | $1.5M | — | 0.426% | 0.00% |
| 19 | Universal- Beteiligungs- und Servicegesellschaft mbH | 59K | $1.4M | 0.0% | 0.409% | 0.00% |
| 20 | Connor, Clark & Lunn Investment Management Ltd. | 58K | $1.4M | +1.9% | 0.403% | 0.00% |
| 21 | KING LUTHER CAPITAL MANAGEMENT CORP | 46K | $1.1M | 0.0% | 0.319% | 0.00% |
| 22 | VICTORY CAPITAL MANAGEMENT INC | 42K | $1.0M | 0.0% | 0.290% | 0.00% |
| 23 | MORGAN STANLEY | 38K | $909K | +7.7% | 0.263% | 0.00% |
| 24 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 34K | $814K | 0.0% | 0.235% | 0.02% |
| 25 | CITADEL ADVISORS LLC | 33K | $792K | -8.0% | 0.229% | 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 PKOH — a direct measure of their conviction.
Filings activity in PKOH 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 | 96 | +5.5% | 34.52% | +4.63 pp | $173M | +15% |
| Q4 2025 | 91 | +2.2% | 29.89% | +0.04 pp | $149M | +0.2% |
| Q3 2025 | 89 | 2.2% | 29.85% | +5.28 pp | $149M | +22% |
| Q2 2025 | 91 | 8.1% | 24.57% | 5.24 pp | $123M | 18% |
| Q1 2025 | 99 | 2.0% | 29.81% | 5.98 pp | $149M | 17% |
| Q4 2024 | 101 | +1.0% | 35.79% | 4.13 pp | $179M | 10% |
| Q3 2024 | 100 | +8.7% | 39.92% | +8.38 pp | $200M | +27% |
| Q2 2024 | 92 | — | 31.54% | — | $158M | — |
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 PKOH stock.
Based on Q1 2026 13F filings, institutional ownership of Park-Ohio Holdings Corp. stands at 34.5%, held across 96 reporting institutions.
GAMCO INVESTORS, INC. ET AL is the largest reported institutional holder of PKOH, with approximately 1,236,121 shares worth $0.03B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of PKOH, including TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for PKOH is 69 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
11 institutions opened new positions in PKOH during Q1 2026, while 6 fully exited. 76 added to existing positions and 8 trimmed.
PKOH institutional ownership rose by 4.63 percentage points quarter-over-quarter, with a net change of +5 holders.
The top 10 institutions account for 80.3% of all reported 13F value in PKOH, and the top 25 account for 95.2%.
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.
Park-Ohio Holdings Corp. (PKOH) Institutional Ownership