CastleKnight Management LP: MARVELL TECHNOLOGY INC (MRVL): Quarterly 13F Position History
As of Q1 2026, CastleKnight Management LP reported 499,700 shares of MARVELL TECHNOLOGY INC (MRVL), worth $49.5M and representing 2.3% of its 13F equity book. Quarter-over-quarter share count change: 43,100 (-7.9%) . The position first appeared in Q2 2023 and has been disclosed across 12 13F-HR filings in Pactolio's tracked window.
- 499,700Shares Held (Latest Filing)
- $49.5MReported Market Value (Latest Filing)
- 2.3%Portfolio Weight (% of 13F Equity Book)
- 43,100Quarter-over-Quarter Share Change
- +$3.4MQuarter-over-Quarter Value Change
- 681,300Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 12 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 499,700 | 43,100 | -7.9% | $49.5M | 2.3% | $99.0 |
| Q4 2025 | 542,800 | 138,500 | -20.3% | $46.1M | 2.6% | $85.0 |
| Q3 2025 | 681,300 | +587,800 | +628.7% | $57.3M | 3.1% | $84.1 |
| Q2 2025 | 93,500 | +81,900 | +706.0% | $7.2M | 0.5% | $77.4 |
| Q1 2025 | 11,600 | 2,200 | -15.9% | $714.2K | 0.1% | $61.6 |
| Q4 2024 | 13,800 | 3,600 | -20.7% | $1.5M | 0.2% | $110.5 |
| Q3 2024 | 17,400 | 20,700 | -54.3% | $1.3M | 0.1% | $72.1 |
| Q2 2024 | 38,100 | +17,700 | +86.8% | $2.7M | 0.4% | $69.9 |
| Q1 2024 | 20,400 | +8,400 | +70.0% | $1.4M | 0.2% | $70.9 |
| Q4 2023 | 12,000 | 1,600 | -11.8% | $723.7K | 0.1% | $60.3 |
| Q3 2023 | 13,600 | 0 | — | $736.2K | 0.1% | $54.1 |
| Q2 2023 | 13,600 | — | — | $813.0K | 0.2% | $59.8 |
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 MRVL position in 13F-HR filings?
CastleKnight Management LP first reported MARVELL TECHNOLOGY INC (MRVL) on its 13F-HR filing for the period ending 2023-06-30 (Q2 2023). The position has appeared on 12 reported quarters within Pactolio's tracked window.
What was CastleKnight Management LP's most recent quarter-over-quarter share-count change in MRVL?
Between Q4 2025 and Q1 2026, CastleKnight Management LP reduced its MRVL position by 43,100 shares (-7.9%), leaving 499,700 shares at a market value of $49.5M.
Does the implied price-per-share represent CastleKnight Management LP's cost basis in MRVL?
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.