Ownership history in DIMENSIONAL FUND ADVISORS LP · 100 quarters on record
This page tracks every 13F SEC filing in which DIMENSIONAL FUND ADVISORS LP reported a position in D KOSS CORP COM (KOSS). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | UNCHANGED | 23,342 | — | 0% | 0.00% | $97K | $4.14 |
| 2025 Q3 | ADDED | 23,342 | +12,661 | +118.5% | 0.00% | $119K | $5.08 |
| 2025 Q2 | REDUCED | 10,681 | -135,277 | -92.7% | 0.00% | $54K | $5.10 |
| 2024 Q2 | ADDED | 145,958 | +9,813 | +7.2% | 0.00% | $650K | $4.45 |
| 2024 Q1 | REDUCED | 136,145 | -360 | -0.3% | 0.00% | $350K | $2.57 |
| 2023 Q4 | ADDED | 136,505 | +2,514 | +1.9% | 0.00% | $457K | $3.35 |
| 2023 Q3 | UNCHANGED | 133,991 | — | 0% | 0.00% | $403K | $2.96 |
| 2023 Q2 | REDUCED | 133,991 | -4 | -0.0% | 0.00% | $496K | $3.70 |
| 2023 Q1 | REDUCED | 133,995 | -8,000 | -5.6% | 0.00% | $619K | $4.62 |
| 2022 Q4 | ADDED | 141,995 | +2,330 | +1.7% | 0.00% | $693K | $4.95 |
As of 2025 Q4 — sorted by position size