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Equibles

AP

Ampco Pittsburgh Corp
$7.35 -0.92 (-11.12%) At close · Jul 2
Market Cap
$149.40M
Shares
20,326,389

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 63
Total Value: $69,673,497
Total Shares: 10,368,084

Institutional Ownership Trend

25 quarters

Superinvestors Holding AP

All superinvestors →
Mario Gabelli $16,745,951

Holder Concentration

Across 63 13F filers · Δ vs Dec 31, 2025
Top Holder
24.0%
Jun 2023 → Mar 2026 · range 24.0% – 29.7%
−5.6 pts
Top 5
61.0%
Jun 2023 → Mar 2026 · range 61.0% – 79.5%
−12.9 pts
Top 10
74.9%
Jun 2023 → Mar 2026 · range 74.9% – 93.9%
−13.6 pts
HHI
1,032
Jun 2023 → Mar 2026 · range 1,032 – 1,592
Broadly held−479

Quarterly Activity

vs Dec 31, 2025
New
26
Increased
23
Decreased
8
Sold Out
7
Unchanged
6
Holder count: +19
Institutional value: +56.9%
Shares held: +24.5%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega WELLS FARGO & COMPANY/MN +656,000 656,001
Mega JANE STREET GROUP, LLC +142,932 168,301
Large SEI INVESTMENTS CO +94,002 184,336
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP +65,735 107,299
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC +46,875 154,410

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large MARSHALL WACE, LLP −47,051 161,291
Large RENAISSANCE TECHNOLOGIES LLC −38,083 423,219
Small Informed Momentum Co LLC −32,602 115,793
Mega STATE STREET CORP −20,700 59,416
Mega GEODE CAPITAL MANAGEMENT, LLC −7,036 135,063

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 600,114 $4,032,766
Small Huntleigh Advisors, Inc. 230,478 $1,548,812
Mega AMERICAN CENTURY COMPANIES INC 218,860 $1,470,739
Small Meros Investment Management, LP 214,850 $1,443,792
Mega MILLENNIUM MANAGEMENT LLC 160,408 $1,077,941

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 654,635 $3,489,203
Mid Ancora Advisors LLC 354,100 $1,887,353
Mid HUB Investment Partners, LLC 10,300 $54,899
Large Belvedere Trading LLC 10,287 $54,829
Large NewEdge Advisors, LLC 1,849 $9,855
Filter: New 26 Increased 23 Reduced 8 Sold out 7 Unchanged 6
Showing 67 of 67
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mid GAMCO INVESTORS, INC. ET AL $16,745,951 24.03% 2,491,957
Large GABELLI FUNDS LLC $9,406,656 13.50% 1,399,800
Mega AMERIPRISE FINANCIAL INC $7,882,721 11.31% 1,173,024
Mega WELLS FARGO & COMPANY/MN $4,408,326 6.33% 656,001
Mega VANGUARD CAPITAL MANAGEMENT LLC $4,032,766 5.79% 600,114
Large RENAISSANCE TECHNOLOGIES LLC $2,844,031 4.08% 423,219
Mega DIMENSIONAL FUND ADVISORS LP $2,388,468 3.43% 355,427
Small Huntleigh Advisors, Inc. $1,548,812 2.22% 230,478
Mega AMERICAN CENTURY COMPANIES INC $1,470,739 2.11% 218,860
Small Meros Investment Management, LP $1,443,792 2.07% 214,850
Mega BlackRock, Inc. $1,365,052 1.96% 203,133
Large SEI INVESTMENTS CO $1,238,737 1.78% 184,336
Mega JANE STREET GROUP, LLC $1,130,981 1.62% 168,301
Large MARSHALL WACE, LLP $1,083,875 1.56% 161,291
Mega MILLENNIUM MANAGEMENT LLC $1,077,941 1.55% 160,408
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $1,037,635 1.49% 154,410
Mega GEODE CAPITAL MANAGEMENT, LLC $907,623 1.30% 135,063
Small Teton Advisors, LLC $873,600 1.25% 130,000
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $822,648 1.18% 122,418
Mid RITHOLTZ WEALTH MANAGEMENT $798,194 1.15% 118,779
Small Informed Momentum Co LLC $778,128 1.12% 115,793
Large ACADIAN ASSET MANAGEMENT LLC $561,738 0.81% 83,592
Mega VANGUARD FIDUCIARY TRUST CO Bank $489,303 0.70% 72,813
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $471,072 0.68% 70,100
Mid RBF Capital, LLC $403,200 0.58% 60,000
Mega STATE STREET CORP $399,275 0.57% 59,416
Mid XTX Topco Ltd $326,471 0.47% 48,582
Large Empowered Funds, LLC $315,000 0.45% 46,875
Mega UBS Group AG $293,805 0.42% 43,721
Mega GOLDMAN SACHS GROUP INC $273,705 0.39% 40,730
Mid ALGERT GLOBAL LLC $194,423 0.28% 28,932
Mega NORTHERN TRUST CORP Bank $190,975 0.27% 28,419
Large Hudson Bay Capital Management LP $182,192 0.26% 27,112
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $178,745 0.26% 26,599
Small Central Pacific Bank - Trust Division Bank $150,534 0.22% 22,401
Mega BANK OF AMERICA CORP /DE/ Bank $136,281 0.20% 20,280
Mid SIMPLEX TRADING, LLC $135,488 0.19% 20,162
Large OMERS ADMINISTRATION Corp $129,696 0.19% 19,300
Mid Brevan Howard Capital Management LP $125,845 0.18% 18,727
Mid GSA CAPITAL PARTNERS LLP $125,375 0.18% 18,657
Large HRT FINANCIAL LP $125,133 0.18% 18,621
Large Janney Montgomery Scott LLC $117,707 0.17% 17,516
Small Palumbo Wealth Management LLC $102,365 0.15% 15,233
Micro RAFFLES ASSOCIATES LP $100,800 0.14% 15,000
Mega CITADEL ADVISORS LLC $97,030 0.14% 14,439
Mega CITADEL ADVISORS LLC $89,376 0.13% 13,300
Small D'Orazio & Associates, Inc. $74,612 0.11% 11,103
Small DUDLEY CAPITAL MANAGEMENT, LLC $73,920 0.11% 11,000
Mid Hodges Capital Management Inc. $73,315 0.11% 10,910
Mega CITADEL ADVISORS LLC $72,576 0.10% 10,800
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $71,232 0.10% 10,600
Large Schonfeld Strategic Advisors LLC $69,216 0.10% 10,300
Mega MORGAN STANLEY $64,383 0.09% 9,581
Mega Vanguard Global Advisers, LLC $49,855 0.07% 7,419
Mid GROUP ONE TRADING LLC $44,768 0.06% 6,662
Mega PNC FINANCIAL SERVICES GROUP, INC. $44,352 0.06% 6,600
Mega CITIGROUP INC $10,174 0.01% 1,514
Mega ROYAL BANK OF CANADA Bank $6,518 0.01% 970
Large JONES FINANCIAL COMPANIES LLLP $6,491 0.01% 966
Mid Farther Finance Advisors, LLC $4,032 0.01% 600
Large OSAIC HOLDINGS, INC. $2,419 0.00% 360
Mega BARCLAYS PLC $1,747 0.00% 260
Mid Tower Research Capital LLC (TRC) $947 0.00% 141
Micro Fortitude Family Office, LLC Family Office $409 0.00% 61
Mid SALEM INVESTMENT COUNSELORS INC $168 0.00% 25
Mid QUADRANT CAPITAL GROUP LLC $120 0.00% 18
Mid SBI Securities Co., Ltd. Broker-Dealer $33 0.00% 5
Key facts CIK 6176 CUSIP 032037103 Visit website Investor relations

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