Preformed Line Products Company
Preformed Line Products Company (PLPC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PLPC · as of Sep 30, 2025
Ownership Breakdown
140
Institutional Holders
▲ 13 vs Q2
$589.23M
Total Inst. Value
▲ $115.76M vs Q2
4.89M
Shares Outstanding
freeFloat 68.70%
3.00M
13F Shares Held
▲ 40,245 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
PLPC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
HIGHTOWER ADVISORS, LLC water, sewer, pipeline, comm & power line construction | 866.1K | 17.57% | 17.57% | $169.88B | Nov 7, 2025 | — held |
DIMENSIONAL FUND ADVISORS LP water, sewer, pipeline, comm & power line construction | 335.6K | 6.81% | 6.81% | $65.83B | Nov 12, 2025 | ▼ 22.2K |
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. water, sewer, pipeline, comm & power line construction | 217.5K | 4.41% | 4.41% | $42.66B | Nov 14, 2025 | ▲ 2.8K |
BLACKROCK, INC. water, sewer, pipeline, comm & power line construction | 189.5K | 3.84% | 3.84% | $37.17B | Nov 12, 2025 | ▲ 3.6K |
VANGUARD GROUP INC water, sewer, pipeline, comm & power line construction | 162.2K | 3.29% | 3.29% | $31.81B | Nov 7, 2025 | ▲ 7.4K |
ROYCE & ASSOCIATES LP water, sewer, pipeline, comm & power line construction | 133.1K | 2.70% | 2.70% | $26.11B | Nov 12, 2025 | ▼ 39.0K |
AMERICAN CENTURY COMPANIES INC water, sewer, pipeline, comm & power line construction | 80.3K | 1.63% | 1.63% | $15.76B | Nov 12, 2025 | ▼ 1.4K |
GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC water, sewer, pipeline, comm & power line construction | 79.7K | 1.62% | 1.62% | $15.64B | Nov 13, 2025 | ▲ 913 |
RENAISSANCE TECHNOLOGIES LLC water, sewer, pipeline, comm & power line construction | 76.3K | 1.55% | 1.55% | $14.96B | Nov 13, 2025 | ▼ 16.8K |
GEODE CAPITAL MANAGEMENT, LLC water, sewer, pipeline, comm & power line construction | 72.2K | 1.47% | 1.47% | $14.17B | Nov 12, 2025 | ▲ 5.6K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
20
Increased
+125.7K shares6
New Positions
first time holders17
Decreased
−110.4K shares0
Sold Out
fully exitedNet shares change (top 50)
+15.3K
+125.7K / −110.4K
Net new holders
+9
6 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
PLPC insider trading · insider activity
Source: SEC Form 4
16
Buy transactions
19
Sell transactions
0.84
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
CORLETT GLEN E director | Mar 12, 2026 | D-Return | 400 | $260.24 | $104.1K | 5.6K | Form 4 ↗ |
Morcos Assaad A VP, US Manufacturing | Mar 10, 2026 | D-Return | 1,750 | $260.34 | $455.6K | 0 | Form 4 ↗ |
Olenik John J VP-Research & Engineering | Mar 12, 2026 | D-Return | 752 | $260.84 | $196.2K | 0 | Form 4 ↗ |
RUHLMAN ROBERT G Executive Chairman | Mar 13, 2026 | D-Return | 2,500 | $259.73 | $649.3K | 285.7K | Form 4 ↗ |
David C Sunkle director | Mar 10, 2026 | D-Return | 1,600 | $260.34 | $416.5K | 1.6K | Form 4 ↗ |
Vaccariello Caroline Saylor General Counsel&Corp Secretary | Mar 10, 2026 | D-Return | 1,547 | $260.34 | $402.7K | 1.9K | Form 4 ↗ |
Ruhlman Jon Ryan President | Mar 10, 2026 | D-Return | 2,000 | $260.34 | $520.7K | 3.8K | Form 4 ↗ |
O'Shaughnessy Timothy V.P. Human Resources | Mar 10, 2026 | D-Return | 1,244 | $260.34 | $323.9K | 4.0K | Form 4 ↗ |
Hofstetter John M Executive Vice President | Mar 10, 2026 | D-Return | 6,000 | $260.34 | $1.56M | 3.4K | Form 4 ↗ |
McKenna Dennis F CEO | Mar 10, 2026 | D-Return | 7,887 | $260.34 | $2.05M | 0 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Preformed Line Products Company (PLPC) is primarily owned by institutional investors, who hold approximately 61.4% of total shares outstanding. Company insiders own approximately 31.30%, while retail and public investors account for the remaining 7.26%.
The largest institutional shareholder of Preformed Line Products Company is HIGHTOWER ADVISORS, LLC, holding approximately 866,072 shares — equal to 17.57% of outstanding shares — as of September 30, 2025.
A total of 140 institutional investors currently hold PLPC stock, with a combined institutional value of approximately $589,228,196 as of the most recent 13F filing period.
Frequently asked questions
PLPC ownershipPreformed Line Products Company (PLPC) is primarily owned by institutional investors, who hold approximately 61.4% of shares. The largest shareholder is HIGHTOWER ADVISORS, LLC with a 17.57% stake. Company insiders hold 31.30%. Data sourced from SEC Form 13F as of September 30, 2025.