Clearfield, Inc. (CLFD) ownership: Top institutional holder: VANGUARD GROUP INC ($27.63M). Insider activity: Net Seller (1 buys, 19 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 947982.00 | $27.63M | 2025-12-31 |
| BlackRock, Inc. | 897868.00 | $23.77M | 2026-03-31 |
| ACK Asset Management LLC | 735200.00 | $19.46M | 2026-03-31 |
| MAIRS & POWER INC | 731733.00 | $19.37M | 2026-03-31 |
| COOPER CREEK PARTNERS MANAGEMENT LLC | 479741.00 | $13.98M | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 509836.00 | $13.50M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 355753.00 | $9.42M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 353486.00 | $9.36M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-08 | |
| Buy | null | 2026-05-06 | |
| Sell | null | 2026-02-27 | |
| Sell | null | 2026-02-27 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.