AP

Ampco-Pittsburgh Corp Cross-source read$8.11 1.58%
IndustrialsCUSIP 032037103· EOD Sep 11, 2026

Among active 13F managers last quarter, 14 opened and 7 added, while 7 reduced; the largest holder to move was Gamco Investors, Inc. Et Al (+0.8%). Over the last 180 days, 1 insider sold and 1 insider bought, a net -$70K in open-market trades.

Tracked 13F holders
63
35 in Q2 2026 filings
13F value (tracked)
$81.3M
Smart-money readMixed
Net sellingNet buying
Funds · active managers, latest 13F
21 adding · 7 trimming
Insiders · Form 4 open-market, 180d
1 buying · 1 selling · -$70K
US House · STOCK Act, 180d
0 buying · 0 selling

The legs disagree, or only one of them leans.

Price & smart-money activity

$8.11 1.58%5Y +74.8%
$0.71$3.76$6.82$9.88$12.932021202220232024202520264427424454432433642362105344644455962162129
Hover for who · click for detailEnd-of-day closing prices52w $1.85 – $12.20

Who owns AP?

63 tracked 13F filers · ranked by shares held

63 tracked 13F filers disclose a position in AP as of the latest SEC 13F filings, a combined $81.3M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1Gamco Investors, Inc. Et Al2.5M
$16.7M
+0.8%
Added · +21K sh
Q1 2026
2Gabelli Funds LLC1.4M
$9.4M
−0.3%
Reduced · −5K sh
Q1 2026
3Ameriprise Financial Inc1.2M
$7.9M
+0.9%
Added · +11K sh
Q1 2026
4BlackRock, Inc.983K
$8.5M
+384%
Added · +779K sh
Q2 2026
5Wells Fargo & Company656K
$4.4M
656k×
Added · +656K sh
Q1 2026
6Vanguard Capital Management LLC604K
$5.2M
+0.7%
Added · +4K sh
Q2 2026
7Renaissance Technologies LLC423K
$2.8M
−8.3%
Reduced · −38K sh
Q1 2026
8Dimensional Fund Advisors LP355K
$2.4M
+6.1%
Added · +20K sh
Q1 2026
9Geode Capital Management, LLC343K
$3.0M
+154%
Added · +208K sh
Q2 2026
10American Century Companies Inc219K
$1.5M
New
+219K sh
Q1 2026
11Sei Investments Co184K
$1.2M
+104%
Added · +94K sh
Q1 2026
12O'shaughnessy Asset Management, LLC174K
$1.5M
+42%
Added · +52K sh
Q2 2026
13Jane Street Group, LLC168K
$1.1M
+563%
Added · +143K sh
Q1 2026
14Marshall Wace, LLP161K
$1.1M
−23%
Reduced · −47K sh
Q1 2026
15Millennium Management LLC160K
$1.1M
New
+160K sh
Q1 2026
16State Street Corp159K
$1.4M
+168%
Added · +100K sh
Q2 2026
17Huntleigh Advisors, Inc.141K
$1.2M
−39%
Reduced · −89K sh
Q2 2026
18Ritholtz Wealth Management133K
$1.1M
+12%
Added · +14K sh
Q2 2026
19Teton Advisors, LLC130K
$1.1M
Held
Q2 2026
20Bridgeway Capital Management, LLC125K
$1.1M
−19%
Reduced · −29K sh
Q2 2026
21Vanguard Portfolio Management LLC113K
$975K
New
+113K sh
Q2 2026
22Vanguard Fiduciary Trust Co93K
$803K
+28%
Added · +20K sh
Q2 2026
23Informed Momentum Co LLC90K
$779K
−22%
Reduced · −26K sh
Q2 2026
24Palumbo Wealth Management LLC79K
$685K
+420%
Added · +64K sh
Q2 2026
25Panagora Asset Management Inc52K
$454K
New
+52K sh
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is AP being bought or sold by institutions?

Last quarter, 14 funds opened a new position in AP and 7 added to an existing one, while 7 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
14
funds took a first position
Added
7
added to an existing position
Reduced
7
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own AP also own

CompanyCo-held byTheir position there
Alphabet Inc-CL CGOOG29 funds$29.2B
Berkshire Hathaway Inc-CL BBRK/B29 funds$7.2B
Costco Wholesale CorpCOST29 funds$5.4B
Walmart IncWMT29 funds$4.8B
Nvidia CorpNVDA28 funds$100.9B
Microsoft CorpMSFT28 funds$47.8B
Alphabet Inc-CL AGOOGL28 funds$47.6B
Advanced Micro DevicesAMD28 funds$24.5B
Eli Lilly & CoLLY28 funds$22.3B
Tesla IncTSLA28 funds$16.7B
Bank Of America CorpBAC28 funds$7.2B
Apple IncAAPL27 funds$66.6B

Ranked by how many of AP's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in AP.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$30K
1 insider
Sells · 180d
$99K
1 insider
Net · 180d
-$70K
3 open-market transactions
DateInsiderRoleActionSharesValue
Jun 25, 2026Lyon SamuelPresident of Union ElectricSell (S)10K$93K
Jun 18, 2026Lyon SamuelPresident of Union ElectricSell (S)547$6K
May 19, 2026McBrayer BrettChief Executive Officer, DirectorBuy (P)3K$30K
Mar 19, 2026McBrayer BrettChief Executive Officer, DirectorBuy (P)8K$50K
Dec 1, 2025McBrayer BrettChief Executive Officer, DirectorBuy (P)19K$49K
Nov 19, 2025McNair Darrell LDirectorBuy (P)3K$8K
Nov 17, 2025German Michael IDirectorBuy (P)40K$106K
Nov 17, 2025Louis Berkman Investment CO10% OwnerBuy (P)93K$248K
Nov 17, 2025McNair Darrell LDirectorBuy (P)10K$27K
Mar 25, 2025Fessenden Elizabeth AnneDirectorBuy (P)1K$3K
Mar 24, 2025Fessenden Elizabeth AnneDirectorBuy (P)
3 lots, same day
2K$5K
Sep 13, 2023McNair Darrell LDirectorBuy (P)3K$9K

One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.

Do institutions, insiders and Congress agree?

Mixed signals

Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.

SEC EDGAR 13F + Form 4 + US House STOCK Act{ }get_ticker_confluence · API & MCP

Signals by source

Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive

SourceBuyingSellingNet
13F funds
Top 100 holders by value, passive included; the hero counts active managers only
2610
Insiders
Form 4 open-market
11-$70K
US House
STOCK Act trades
00$0
Sector rotation
AP is in Industrials, which smart money is rotating INTO
+$842.8M

Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.

Institutional ownership over time

35 tracked filers in Q2 2026 filingsstill filing
02754Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $29.6M
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Recent filings

15 most recent

Keep exploring

Connected entities for AP

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Ask your agent what changed in AP

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/AP/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for AP.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for AP. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.