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Security record · archived quarter

ATKR

Atkore Inc. · Industrials · Electrical Equipment & Parts

93.62 +0.1% mkt cap $3.16B quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
12Tracked holders
0Δ holders
3.20MShares held
$270.84MReported value
+2New positions
−2Exits
Rising Conviction score 47/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth 0.0% · share flow +9.6% · net new positions 0.0%formula

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 107 +4 19.66M $1.49B +10 −6
Q1 2026 106 0 18.87M $1.11B +6 −7
Q4 2025 107 +1 21.29M $1.35B +2
Q3 2025 19 0 10.82M $678.57M −1
Q2 2025 17 +2 8.87M $625.82M +3 −1
Q1 2025 12 -1 3.30M $198.05M +1 −2
Q4 2024 13 0 3.77M $314.21M
Q3 2024 12 0 3.20M $270.84M +2 −2
Q2 2024 12 2.92M $395.13M
Holder count
Who holds it · Q3 2024
#ManagerSharesΔ sharesValueTheir weightHeld
1 Geode Capital Management (passive) 870.30K -3.2% $73.76M 0.0% ▼ Trim 2 SEC ↗
2 Geode Capital Management (passive) 870.30K -3.2% $73.76M 0.0% ▼ Trim 2 SEC ↗
3 Citadel Advisors 604.87K +61.3% $51.26M 0.1% ▲ Add 2 SEC ↗
4 Citadel Advisors 604.87K +61.3% $51.26M 0.1% ▲ Add 2 SEC ↗
5 Millennium Management 455.94K +151.7% $38.64M 0.0% ▲ Add 2 SEC ↗
6 Norges Bank (passive) 438.11K -2.6% $37.13M 0.0% ▼ Trim 2 SEC ↗
7 T. Rowe Price 322.70K -8.5% $27.35M 0.0% ▼ Trim 2 SEC ↗
8 T. Rowe Price 322.70K -8.5% $27.35M 0.0% ▼ Trim 2 SEC ↗
9 Marshall Wace 121.99K -45.6% $10.34M 0.0% ▼ Trim 2 SEC ↗
10 Marshall Wace 121.99K -45.6% $10.34M 0.0% ▼ Trim 2 SEC ↗
11 Wellington Management 93.41K New $7.92M 0.0% New 1 SEC ↗
12 Wellington Management 93.41K New $7.92M 0.0% New 1 SEC ↗
13 Wellington Management 93.41K New $7.92M 0.0% New 1 SEC ↗
14 Wellington Management 93.41K New $7.92M 0.0% New 1 SEC ↗
15 Wellington Management 93.41K New $7.92M 0.0% New 1 SEC ↗
16 Two Sigma Investments 92.00K New $7.80M 0.0% New 1 SEC ↗
17 D. E. Shaw & Co. 87.70K +128.8% $7.43M 0.0% ▲ Add 2 SEC ↗
18 Bridgewater Associates 50.36K +1590.6% $4.27M 0.0% ▲ Add 2 SEC ↗
19 AQR Capital Management 46.79K +132.9% $3.96M 0.0% ▲ Add 2 SEC ↗
20 AQR Capital Management 46.79K +132.9% $3.96M 0.0% ▲ Add 2 SEC ↗
21 Gotham Asset Management 11.84K +138.4% $1.00M 0.0% ▲ Add 2 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Wellington Management $7.92M 0.0%
Wellington Management $7.92M 0.0%
Wellington Management $7.92M 0.0%
Wellington Management $7.92M 0.0%
Wellington Management $7.92M 0.0%
Two Sigma Investments $7.80M 0.0%

Exited

Arrowstreet Capital $28.52M was 0.0%
Capital World Investors $20.98M was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 300 holders, 32.09M shares, $1.82B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Aug 10 Lamps Mark F.

Officer · 300 sh · $28,125

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Aug 14 SC 13G/A — Gates Capital Management, Inc.

View original SEC filing ↗

Aug 14 SC 13G — AMERICAN CENTURY INVESTMENT MANAGEMENT…

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q3 2024 · Methodology · Get this via the API