CastleKnight Management LP — MICRON TECHNOLOGY INC MU: Quarterly 13F Position History
CastleKnight Management LP has reported MICRON TECHNOLOGY INC (MU) on 17 13F-HR filings in Pactolio's tracked window, first appearing in Q1 2022. As of Q1 2026, the position is sized at 144,721 shares ($48.9M market value, 2.29% of the equity book). Quarter-over-quarter share count change: 87,900 (-37.8%) .
- 144,721Shares Held (Latest Filing)
- $48.9MReported Market Value (Latest Filing)
- 2.29%Portfolio Weight (% of 13F Equity Book)
- 87,900Quarter-over-Quarter Share Change
- -$17.5MQuarter-over-Quarter Value Change
- 286,660Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 17 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 144,721 | 87,900 | -37.8% | $48.9M | 2.29% | $337.84 |
| Q4 2025 | 232,621 | 54,039 | -18.9% | $66.4M | 3.78% | $285.41 |
| Q3 2025 | 286,660 | +26,600 | +10.2% | $48.0M | 2.58% | $167.32 |
| Q2 2025 | 260,060 | +238,900 | +1129.0% | $32.1M | 2.12% | $123.25 |
| Q1 2025 | 21,160 | 109,400 | -83.8% | $1.8M | 0.20% | $86.89 |
| Q4 2024 | 130,560 | +14,860 | +12.8% | $11.0M | 1.20% | $84.16 |
| Q3 2024 | 115,700 | +109,500 | +1766.1% | $12.0M | 1.39% | $103.71 |
| Q2 2024 | 6,200 | 2,700 | -30.3% | $815.5K | 0.11% | $131.53 |
| Q1 2024 | 8,900 | 16,200 | -64.5% | $1.0M | 0.15% | $117.89 |
| Q4 2023 | 25,100 | 20,700 | -45.2% | $2.1M | 0.34% | $85.34 |
| Q3 2023 | 45,800 | +45,800 | — | $3.1M | 0.53% | $68.03 |
| Q2 2023 | 0 | 0 | — | $0 | 0.00% | — |
| Q1 2023 | 0 | 0 | — | $0 | 0.00% | — |
| Q4 2022 | 0 | 0 | — | $0 | 0.00% | — |
| Q3 2022 | 0 | 0 | — | $0 | 0.00% | — |
| Q2 2022 | 0 | 2,600 | -100.0% | $0 | 0.00% | — |
| Q1 2022 | 2,600 | — | — | $203.0K | 0.06% | $78.08 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did CastleKnight Management LP first disclose a MU position in 13F-HR filings?
CastleKnight Management LP first reported MICRON TECHNOLOGY INC (MU) on its 13F-HR filing for the period ending 2022-03-31 (Q1 2022). The position has appeared on 17 reported quarters within Pactolio's tracked window.
What was CastleKnight Management LP's most recent quarter-over-quarter share-count change in MU?
Between Q4 2025 and Q1 2026, CastleKnight Management LP reduced its MU position by 87,900 shares (-37.8%), leaving 144,721 shares at a market value of $48.9M.
Does the implied price-per-share represent CastleKnight Management LP's cost basis in MU?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.