AMPCO-PITTSBURG CORP (AP): Institutional Ownership
Hedge funds and institutional managers reporting a position in AP · Materials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
9
13F filers
Aggregate Value
$22.1M
Across holders
Last Price
$9.35
2026-06-26
Sector
Materials
GICS
Holder activity5 new1 added3 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| GAMCO INVESTORS, INC. ET AL CIK 0000807249 | Institutional Manager | 2.49M | $16.7M | 75.7% | 0.2% | Added | +$142K | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 423K | $2.8M | 12.9% | 0.0% | Reduced | $-256K | Q1 2026 |
| Ancora Advisors, LLC CIK 0001446114 | Hedge Fund | 354K | $1.9M | 8.5% | 0.0% | New | — | Q4 2025 |
| Hudson Bay Capital Management LP CIK 0001393825 | Hedge Fund | 27K | $182K | 0.8% | 0.0% | New | — | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 23K | $153K | 0.7% | 0.0% | Reduced | $-924K | Q1 2026 |
| Brevan Howard Capital Management LP CIK 0001512857 | Hedge Fund | 19K | $126K | 0.6% | 0.0% | New | — | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 13K | $89K | 0.4% | 0.0% | Reduced | $-4K | Q1 2026 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 10K | $69K | 0.3% | 0.0% | New | — | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 15K | $31K | 0.1% | 0.0% | New | — | Q4 2024 |
Added
Institutional Manager
$16.7M· 75.7% of total· 0.2% port· 2.49M sh· +$142K QoQ· Q1 2026
Reduced
Hedge Fund
$2.8M· 12.9% of total· 0.0% port· 423K sh· $-256K QoQ· Q1 2026
New
Hedge Fund
$1.9M· 8.5% of total· 0.0% port· 354K sh· — QoQ· Q4 2025
New
Hedge Fund
$182K· 0.8% of total· 0.0% port· 27K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$153K· 0.7% of total· 0.0% port· 23K sh· $-924K QoQ· Q1 2026
New
Hedge Fund
$126K· 0.6% of total· 0.0% port· 19K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$89K· 0.4% of total· 0.0% port· 13K sh· $-4K QoQ· Q1 2026
New
Hedge Fund
$69K· 0.3% of total· 0.0% port· 10K sh· — QoQ· Q1 2026
New
Hedge Fund
$31K· 0.1% of total· 0.0% port· 15K sh· — QoQ· Q4 2024