Vault-13

AMPCO-PITTSBURG CORP AP

COM · Common Stock · CUSIP 032037103

85 institutional holders +22 vs Q1 2026
11,462,80811.5m shares reported held*
55.5% of all shares outstanding*
$99.2mreported value*
30 new 27 added 19 reduced 9 sold out net bought ≈ $10.8m (+1.2m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($435.0k this quarter). Holder counts are more reliable. Shares outstanding: 20.7m as of 2026-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $8.65. Options: 7 managers hold calls ($2.0m notional), 3 hold puts ($158.3k).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 36Q4 22: 37Q1 23: 39Q2 23: 36Q3 23: 38Q4 23: 36Q1 24: 35Q2 24: 43Q3 24: 33Q4 24: 38Q1 25: 39Q2 25: 40Q3 25: 36Q4 25: 43Q1 26: 63Q2 26: 8585Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202236
Q4 202237
Q1 202339
Q2 202336
Q3 202338
Q4 202336
Q1 202435
Q2 202443
Q3 202433
Q4 202438
Q1 202539
Q2 202540
Q3 202536
Q4 202543
Q1 202663
Q2 202685

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 24: 7 bought or addedQ3 24: 23 cut or sold outQ4 24: 11 bought or addedQ4 24: 9 cut or sold outQ4 24Q1 25: 13 bought or addedQ1 25: 11 cut or sold outQ2 25: 22 bought or addedQ2 25: 9 cut or sold outQ2 25Q3 25: 12 bought or addedQ3 25: 19 cut or sold outQ4 25: 24 bought or addedQ4 25: 15 cut or sold outQ4 25Q1 26: 45 bought or addedQ1 26: 15 cut or sold outQ2 26: 57 bought or addedQ2 26: 28 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 2024723
Q4 2024119
Q1 20251311
Q2 2025229
Q3 20251219
Q4 20252415
Q1 20264515
Q2 20265728

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$1m$2m$3mQ3 25 calls: $11.7kQ3 25 puts: $3.5kQ3 25P/C 0.30Q4 25 calls: $84.7kQ4 25 puts: $2.7kQ4 25P/C 0.03Q1 26 calls: $752.0kQ1 26 puts: $161.3kQ1 26P/C 0.21Q2 26 calls: $2.0mQ2 26 puts: $158.3kQ2 26P/C 0.08
Numbers
QuarterCallsPutsP/C
Q3 2025$11.7k$3.5k0.30
Q4 2025$84.7k$2.7k0.03
Q1 2026$752.0k$161.3k0.21
Q2 2026$2.0m$158.3k0.08

Biggest buyers

BlackRock, Inc. Added +779,478+779.5k
GEODE CAPITAL MANAGEMENT, LLC Added +207,773+207.8k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added +168,722+168.7k
VANGUARD PORTFOLIO MANAGEMENT LLC New +112,721+112.7k
AMERICAN CENTURY COMPANIES INC Added +109,988+110.0k
ACADIAN ASSET MANAGEMENT LLC Added +107,423+107.4k
STATE STREET CORP Added +99,900+99.9k
NORTHERN TRUST CORP Added +93,058+93.1k
Palumbo Wealth Management LLC Added +63,952+64.0k
GOLDMAN SACHS GROUP INC Added +59,994+60.0k

Biggest sellers

AMERIPRISE FINANCIAL INC Reduced -267,345-267.3k
MILLENNIUM MANAGEMENT LLC Reduced -140,615-140.6k
SEI INVESTMENTS CO Reduced -118,425-118.4k
Huntleigh Advisors, Inc. Reduced -89,306-89.3k
MARSHALL WACE, LLP Reduced -80,930-80.9k
RBF Capital, LLC Sold out -60,000-60.0k
DIMENSIONAL FUND ADVISORS LP Reduced -59,983-60.0k
GAMCO INVESTORS, INC. ET AL Reduced -32,128-32.1k
BRIDGEWAY CAPITAL MANAGEMENT, LLC Reduced -29,024-29.0k
Hudson Bay Capital Management LP Sold out -27,112-27.1k

Biggest calls

Caption Management, LLC New $778.5k90.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $371.9k43.0k shares
JANE STREET GROUP, LLC New $358.1k41.4k shares
GROUP ONE TRADING LLC Unchanged $268.1k31.0k shares
CITADEL ADVISORS LLC Added $150.5k17.4k shares
IMC-Chicago, LLC New $104.7k12.1k shares
SIMPLEX TRADING, LLC New $10.4k1.2k shares

Biggest puts

JANE STREET GROUP, LLC New $148.8k17.2k shares
GROUP ONE TRADING LLC New $8.7k1.0k shares
SIMPLEX TRADING, LLC Unchanged $865100 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Louis Berkman Investment CO 13D · may seek influence filed 2025-11-26
Stated purposeThis Amendment is being filed to report the purchase by LBIC of 93,000 common shares of the Issuer ("Common Shares") for a weighted average of $2.67 per whole Common Share on November 17, 2025 for investment purposes. Except as set forth herein, the Reporting Person filing this Amendment has no plans or proposals that relate to or would result in any of the actions or events set forth in paragraphs (a) through (j) of Item 4 of Schedule 13D. Full filing
15.4% 3.1m≈ $27.1m 2025-11-26
GAMCO INVESTORS, INC. ET AL 13D · may seek influence filed 2025-08-04 12.0% 2.4m 2025-08-04
Galloway Capital Partners, LLC 13D · may seek influence new · filed 2025-12-19
Stated purposeEach Reporting Person acquired the securities described in this Schedule 13D for investment purposes and intend to review its investment in the Issuer on a continuing basis. Each Reporting Person may from time to time acquire additional securities of the Issuer or retain or sell all or a portion of the shares then held by such Reporting Person, in the open market, block trades, underwritten public offerings or privately negotiated transactions. Any actions any Reporting Person might undertake with respect to its investment in the Issuer may be made at any time and from time to time and will be dependent upon such Reporting Person's review of numerous factors, including, but not limited to: ongoing evaluation of the Issuer's business, financial condition, operations, prospects and strategi… Full filing
5.2% new 1.1m≈ $9.1m 2025-12-19

Fell to 5% or below in the last year: AMERIPRISE FINANCIAL INC (4.5%, 2026-08-14), RUTABAGA CAPITAL MANAGEMENT LLC/MA (0.0%, 2026-01-22), Ancora Alternatives LLC (4.2%, 2025-11-14)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 1 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 3 buyingQ4 25: 0 sellingQ1 26: 1 buyingQ1 26: 0 sellingQ1 26Q2 26: 1 buyingQ2 26: 1 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20251$8.4k0——
Q2 20250—0——
Q3 20250—0——
Q4 20253$189.4k0——
Q1 20261$50.0k0——
Q2 20261$29.8k1$99.5k—
Q3 20260—0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-06-25 Lyon Samuel President of Union Electric Sold 9,500 $9.82 $93.3k9.5k shares -5%
2026-06-18 Lyon Samuel President of Union Electric Sold 547 $11.30 $6.2k547 shares -<1%
2026-05-19 McBrayer Brett Chief Executive Officer, director Bought 3,300 $9.03 $29.8k3.3k shares +1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 GAMCO INVESTORS, INC. ET AL 0.19% of their portfolio GREENWICH, CT 2,459,8292.5m $21.3m $21.3m 0.19% Reduced -32.1k -32,128
2 GABELLI FUNDS LLC 0.08% of their portfolio Rye, NY 1,391,8001.4m $12.0m $12.0m 0.08% Reduced -8.0k -8,000
3 BlackRock, Inc. 0.00% of their portfolio New York, NY 982,611982.6k $8.5m $8.5m 0.00% Added +779.5k +779,478
4 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 905,679905.7k $7.8m $7.8m 0.00% Reduced -267.3k -267,345
5 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 660,945660.9k $5.7m $5.7m 0.00% Added +4.9k +4,944
6 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 604,091604.1k $5.2m $5.2m 0.00% Added +4.0k +3,977
7 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 414,419414.4k $3.6m $3.6m 0.00% Reduced -8.8k -8,800
8 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 342,836342.8k $3.0m $3.0m 0.00% Added +207.8k +207,773
9 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 328,848328.8k $2.8m $2.8m 0.00% Added +110.0k +109,988
10 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 295,444295.4k $2.6m $2.6m 0.00% Reduced -60.0k -59,983
11 Meros Investment Management, LP 0.66% of their portfolio DALLAS, TX 239,910239.9k $2.1m $2.1m 0.66% Added +25.1k +25,060
12 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 195,321195.3k $1.7m $1.7m 0.00% Added +168.7k +168,722
13 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 191,015191.0k $1.6m $1.6m 0.00% Added +107.4k +107,423
14 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio Stamford, CT 174,312174.3k $1.5m $1.5m 0.01% Added +51.9k +51,894
15 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 159,316159.3k $1.4m $1.4m 0.00% Added +99.9k +99,900
16 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 150,371150.4k $1.3m $1.3m 0.00% Reduced -17.9k -17,930
17 Huntleigh Advisors, Inc. 0.17% of their portfolio ST. LOUIS, MO 141,172141.2k $1.2m $1.2m 0.17% Reduced -89.3k -89,306
18 RITHOLTZ WEALTH MANAGEMENT 0.02% of their portfolio NEW YORK, NY 132,943132.9k $1.1m $1.1m 0.02% Added +14.2k +14,164
19 Teton Advisors, LLC 0.65% of their portfolio GREENWICH, CT 130,000130.0k $1.1m $1.1m 0.65% Unchanged
20 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio HOUSTON, TX 125,386125.4k $1.1m $1.1m 0.02% Reduced -29.0k -29,024
21 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 121,477121.5k $1.1m $1.1m 0.00% Added +93.1k +93,058
22 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 112,721112.7k $975.0k $975.0k 0.00% New
23 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 100,724100.7k $871.3k $871.3k 0.00% Added +60.0k +59,994
24 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 92,87592.9k $803.4k $803.4k 0.00% Added +20.1k +20,062
25 Informed Momentum Co LLC 0.07% of their portfolio SOLANA BEACH, CA 90,05390.1k $779.0k $779.0k 0.07% Reduced -25.7k -25,740
26 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 80,36180.4k $695.1k $695.1k 0.00% Reduced -80.9k -80,930
27 Palumbo Wealth Management LLC 0.14% of their portfolio GREAT NECK, NY 79,18579.2k $685.0k $685.0k 0.14% Added +64.0k +63,952
28 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 65,91165.9k $570.1k $570.1k 0.00% Reduced -118.4k -118,425
29 PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio BOSTON, MA 52,44152.4k $453.6k $453.6k 0.00% New
30 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 51,40951.4k $444.7k $444.7k 0.00% Added +37.0k +36,970
31 Empowered Funds, LLC 0.00% of their portfolio NEWTOWN SQUARE, PA 50,28650.3k $435.0k $435.0k 0.00% Added +3.4k +3,411
32 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 39,37339.4k $340.6k $340.6k 0.00% New
33 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 33,98434.0k $294.0k $294.0k 0.00% New
34 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 32,23032.2k $278.8k $278.8k 0.00% New
35 UBS Group AG 0.00% of their portfolio ZURICH, V8 32,15432.2k $278.1k $278.1k 0.00% Reduced -11.6k -11,567
36 Dynamic Technology Lab Private Ltd 0.06% of their portfolio SINGAPORE, U0 30,37330.4k $263.0k $263.0k 0.06% New
37 RAFFLES ASSOCIATES LP 0.11% of their portfolio NEW YORK, NY 30,00030.0k $259.5k $259.5k 0.11% Added +15.0k +15,000
38 OCCUDO QUANTITATIVE STRATEGIES LP 0.01% of their portfolio FORT LAUDERDALE, FL 24,93624.9k $215.7k $215.7k 0.01% New
39 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 23,99524.0k $207.6k $207.6k 0.00% Reduced -24.6k -24,587
40 Central Pacific Bank - Trust Division 0.02% of their portfolio HONOLULU, HI 22,40122.4k $193.8k $193.8k 0.02% Unchanged
41 GSA CAPITAL PARTNERS LLP 0.01% of their portfolio LONDON, X0 21,64121.6k $187.0k $187.0k 0.01% Added +3.0k +2,984
42 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 21,41921.4k $185.3k $185.3k 0.00% New
43 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 19,79319.8k $171.2k $171.2k 0.00% Reduced -140.6k -140,615
44 Janney Montgomery Scott LLC 0.00% of their portfolio PHILADELPHIA, PA 17,51617.5k $152.0k $152.0k 0.00% Unchanged
45 Brevan Howard Capital Management LP 0.00% of their portfolio ST. HELIER, Y9 16,38816.4k $141.8k $141.8k 0.00% Reduced -2.3k -2,339
46 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 16,13716.1k $139.6k $139.6k 0.00% New
47 Graham Capital Management, L.P. 0.00% of their portfolio ROWAYTON, CT 14,83514.8k $128.3k $128.3k 0.00% New
48 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 14,00014.0k $121.1k $121.1k 0.00% New
49 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 13,95414.0k $120.7k $120.7k 0.00% Reduced -6.3k -6,326
50 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 13,65913.7k $118.1k $118.1k 0.00% New
51 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 13,56013.6k $117.3k $117.3k 0.00% Added +4.0k +3,979
52 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 13,48813.5k $117.0k $117.0k 0.00% New
53 IMC-Chicago, LLC 0.00% of their portfolio CHICAGO, IL 13,31613.3k $115.2k $115.2k 0.00% New
54 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 12,30712.3k $106.5k $106.5k 0.00% New
55 ALGERT GLOBAL LLC 0.00% of their portfolio SAN FRANCISCO, CA 11,64211.6k $100.7k $100.7k 0.00% Reduced -17.3k -17,290
56 Hodges Capital Management Inc. 0.01% of their portfolio DALLAS, TX 11,18511.2k $96.8k $96.8k 0.01% Added +275 +275
57 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 9,8959.9k $85.6k $85.6k 0.00% New
58 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 9,1349.1k $79.0k $79.0k 0.00% Added +7.6k +7,620
59 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 7,4637.5k $64.6k $64.6k 0.00% New
60 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 7,2507.2k $63.7k $63.7k 0.00% New
61 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 7,0057.0k $60.6k $60.6k 0.00% Added +343 +343
62 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 6,6006.6k $57.1k $57.1k 0.00% Unchanged
63 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 4,7804.8k $41.3k $41.3k 0.00% New
64 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 3,6783.7k $31.8k $31.8k 0.00% Reduced -3.7k -3,741
65 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 3,3413.3k $28.9k $28.9k 0.00% Added +3.1k +3,081
66 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 2,9002.9k $25.1k $25.1k 0.00% New
67 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 2,8132.8k $24.3k $24.3k 0.00% New
68 Legal & General Group Plc 0.00% of their portfolio London, X0 1,5811.6k $13.7k $13.7k 0.00% New
69 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,4711.5k $12.7k $12.7k 0.00% New
70 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 1,2961.3k $11.2k $11.2k 0.00% New
71 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,1371.1k $9.8k $9.8k 0.00% Added +996 +996
72 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 967967 $9.0k $9.0k 0.00% Added +1 +1
73 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 707707 $6.0k $6.0k 0.00% Reduced -263 -263
74 FMR LLC 0.00% of their portfolio BOSTON, MA 700700 $6.1k $6.1k 0.00% New
75 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 600600 $5.2k $5.2k 0.00% Unchanged
76 Markowski Investments 0.00% of their portfolio TAMPA, FL 500500 $4.3k $4.3k 0.00% First filing
77 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 367367 $3.2k $3.2k 0.00% New
78 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 360360 $3.1k $3.1k 0.00% Unchanged
79 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 223223 $1.9k $1.9k 0.00% New
80 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 125125 $1.1k $1.1k 0.00% Added +120 +120
81 Rialto Wealth Management, LLC 0.00% of their portfolio SYRACUSE, NY 7979 $684 $684 0.00% New
82 Fortitude Family Office, LLC 0.00% of their portfolio SCOTTSDALE, AZ 6161 $528 $528 0.00% Unchanged
83 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 5757 $493 $493 0.00% New
84 SALEM INVESTMENT COUNSELORS INC 0.00% of their portfolio WINSTON-SALEM, NC 2525 $217 $217 0.00% Unchanged
85 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 22 $17 $17 0.00% New