Plexus Corp.
Plexus Corp. (PLXS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PLXS · as of Sep 30, 2025
Ownership Breakdown
330
Institutional Holders
▼ 4 vs Q2
$3.76B
Total Inst. Value
▲ $263.35M vs Q2
26.76M
Shares Outstanding
freeFloat 98.57%
26.01M
13F Shares Held
▲ 150,094 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
PLXS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. printed circuit boards | 4.22M | 15.61% | 15.61% | $611.09B | Nov 12, 2025 | ▼ 48.2K |
VANGUARD GROUP INC printed circuit boards | 3.68M | 13.61% | 13.61% | $533.02B | Nov 7, 2025 | ▲ 22.4K |
DISCIPLINED GROWTH INVESTORS INC /MN printed circuit boards | 1.55M | 5.74% | 5.74% | $224.79B | Nov 14, 2025 | ▼ 92.9K |
DIMENSIONAL FUND ADVISORS LP printed circuit boards | 1.37M | 5.05% | 5.05% | $197.70B | Nov 12, 2025 | ▼ 7.8K |
FIDUCIARY MANAGEMENT INC /WI/ printed circuit boards | 1.35M | 4.99% | 4.99% | $195.53B | Nov 14, 2025 | ▲ 417.0K |
AMERICAN CENTURY COMPANIES INC printed circuit boards | 1.10M | 4.08% | 4.08% | $159.72B | Nov 12, 2025 | ▲ 338.1K |
STATE STREET CORP printed circuit boards | 1.02M | 3.79% | 3.79% | $148.29B | Nov 14, 2025 | ▼ 34.6K |
BNP PARIBAS ASSET MANAGEMENT HOLDING S.A. printed circuit boards | 915.3K | 3.38% | 3.38% | $132.43B | Nov 7, 2025 | ▲ 35.2K |
EARNEST PARTNERS LLC printed circuit boards | 711.6K | 2.63% | 2.63% | $102.96B | Nov 14, 2025 | ▼ 35.2K |
GEODE CAPITAL MANAGEMENT, LLC printed circuit boards | 668.6K | 2.47% | 2.47% | $96.75B | Nov 12, 2025 | ▲ 4.5K |
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
25
Increased
+1.51M shares1
New Positions
first time holders24
Decreased
−754.5K shares0
Sold Out
fully exitedNet shares change (top 50)
+751.4K
+1.51M / −754.5K
Net new holders
+2
1 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
PLXS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
19
Sell transactions
0.00
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 |
|---|---|---|---|---|---|---|---|
Kelsey Todd P. President & CEO | Jun 3, 2026 | Sale | 1,000 | $290.00 | $290.0K | 70.4K | Form 4 ↗ |
Kelsey Todd P. President & CEO | May 27, 2026 | Sale | 1,000 | $274.75 | $274.8K | 71.4K | Form 4 ↗ |
Kelsey Todd P. President & CEO | May 20, 2026 | Sale | 700 | $252.20 | $176.5K | 73.2K | Form 4 ↗ |
Kelsey Todd P. President & CEO | May 20, 2026 | Sale | 800 | $253.26 | $202.6K | 72.4K | Form 4 ↗ |
Tan Victor (Pang Hau) Regional President - APAC | May 11, 2026 | Sale | 3,000 | $271.23 | $813.7K | 10.5K | Form 4 ↗ |
Ninivaggi Angelo Michael Jr EVP, Chief Legal & PAO & Secy | May 7, 2026 | Sale | 1,294 | $262.43 | $339.6K | 20.5K | Form 4 ↗ |
Ninivaggi Angelo Michael Jr EVP, Chief Legal & PAO & Secy | May 7, 2026 | Sale | 945 | $263.66 | $249.2K | 19.6K | Form 4 ↗ |
Ninivaggi Angelo Michael Jr EVP, Chief Legal & PAO & Secy | May 7, 2026 | Sale | 59 | $264.38 | $15.6K | 19.5K | Form 4 ↗ |
Ninivaggi Angelo Michael Jr EVP, Chief Legal & PAO & Secy | May 8, 2026 | Sale | 1,484 | $264.11 | $391.9K | 18.1K | Form 4 ↗ |
Ninivaggi Angelo Michael Jr EVP, Chief Legal & PAO & Secy | May 8, 2026 | Sale | 1,562 | $265.18 | $414.2K | 16.5K | 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
Plexus Corp. (PLXS) is primarily owned by institutional investors, who hold approximately 97.2% of total shares outstanding. Company insiders own approximately 1.43%, while retail and public investors account for the remaining 1.34%.
The largest institutional shareholder of Plexus Corp. is BLACKROCK, INC., holding approximately 4.22 million shares — equal to 15.61% of outstanding shares — as of September 30, 2025.
A total of 330 institutional investors currently hold PLXS stock, with a combined institutional value of approximately $3.76 billion as of the most recent 13F filing period.
Frequently asked questions
PLXS ownershipPlexus Corp. (PLXS) is primarily owned by institutional investors, who hold approximately 97.2% of shares. The largest shareholder is BLACKROCK, INC. with a 15.61% stake. Company insiders hold 1.43%. Data sourced from SEC Form 13F as of September 30, 2025.