CastleKnight Management LP
Position in SIMO — Silicon Motion Technology CORP
CIK 1835751
New York, NY
Position in SIMO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$20,491,461
-$15,831,546 QoQ
Shares Held
61,475
-81.0% QoQ
Ownership
0.181%
of shares outstanding
% of Portfolio
0.76%
of 13F equity value
Holder Rank
#70
of 383 holders
Holding Since
Sep 2023
9 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in SIMO Over Time
Shares Held
Position Value (USD)
Derivatives in SIMO
reported options exposure · as of Jun 30, 2026CallValue
$6,666,600
CallShares
20,000
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Semiconductors
Technology · as of Jun 30, 2026CastleKnight Management LP holds $245,643,736 across 14 Semiconductors names. SIMO ranks #6 (8.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NVDA |
Nvidia Corp
|
262,300 | $52,483,607 | |
| 2 | NXPI |
NXP Semiconductors N.V.
|
148,900 | $41,845,367 | |
| 3 | AVGO |
Broadcom Inc.
|
82,000 | $30,975,500 | |
| 4 | TSM |
Taiwan Semiconductor Manufacturing Co Ltd
|
59,700 | $28,510,929 | |
| 5 | MU |
Micron Technology Inc
|
22,200 | $25,625,238 | |
| 6 | SIMO |
Silicon Motion Technology CORP
This page
|
61,475 | $20,491,461 | |
| 7 | ON |
On Semiconductor Corp
|
171,600 | $16,223,064 | |
| 8 | VSH |
Vishay Intertechnology Inc
|
223,300 | $12,009,074 |
All Filings in SIMO
Export CSV
16 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $6,666,600 | 20,000 | Call | Sole | 2026-08-14 | |
| 2026-06-30 | $20,491,461 | 61,475 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $20,212,200 | 180,000 | Call | Sole | 2026-05-15 | |
| 2026-03-31 | $36,323,007 | 323,475 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $7,623,277 | 82,236 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $1,269,990 | 13,700 | Call | Sole | 2026-02-17 | |
| 2024-12-31 | $266,142 | 4,924 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $1,477,439 | 24,324 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $8,099,000 | 100,000 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $9,151,870 | 113,000 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $7,694,000 | 100,000 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $12,239,230 | 159,075 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $6,127,000 | 100,000 | Call | Sole | 2024-02-14 | |
| 2023-12-31 | $10,236,685 | 167,075 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $5,125,000 | 100,000 | Call | Sole | 2023-11-14 | |
| 2023-09-30 | $5,801,500 | 113,200 | Shares | Sole | 2023-11-14 | |
| No filing history on record for this holder in this stock. | ||||||