Pertento Partners LLP: SILICON MOTION TECHNOLOGY CO (SIMO): Quarterly 13F Position History
As of Q1 2026, Pertento Partners LLP reported 412,536 shares of SILICON MOTION TECHNOLOGY CO (SIMO), worth $46.3M and representing 4.9% of its 13F equity book. Quarter-over-quarter share count change: 738,875 (-64.2%) . The position first appeared in Q3 2023 and has been disclosed across 11 13F-HR filings in Pactolio's tracked window.
- 412,536Shares Held (Latest Filing)
- $46.3MReported Market Value (Latest Filing)
- 4.9%Portfolio Weight (% of 13F Equity Book)
- 738,875Quarter-over-Quarter Share Change
- -$60.4MQuarter-over-Quarter Value Change
- 1,290,409Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 11 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 412,536 | 738,875 | -64.2% | $46.3M | 4.9% | $112.3 |
| Q4 2025 | 1,151,411 | 138,998 | -10.8% | $106.7M | 11.7% | $92.7 |
| Q3 2025 | 1,290,409 | +31,405 | +2.5% | $122.3M | 14.9% | $94.8 |
| Q2 2025 | 1,259,004 | +49,541 | +4.1% | $94.6M | 10.7% | $75.2 |
| Q1 2025 | 1,209,463 | +42,549 | +3.6% | $61.2M | 7.3% | $50.6 |
| Q4 2024 | 1,166,914 | +277,462 | +31.2% | $63.1M | 6.5% | $54.0 |
| Q3 2024 | 889,452 | +50,142 | +6.0% | $54.0M | 6.6% | $60.7 |
| Q2 2024 | 839,310 | +243,935 | +41.0% | $68.0M | 8.6% | $81.0 |
| Q1 2024 | 595,375 | 10,094 | -1.7% | $45.8M | 9.2% | $76.9 |
| Q4 2023 | 605,469 | +438,469 | +262.6% | $37.1M | 7.0% | $61.3 |
| Q3 2023 | 167,000 | — | — | $8.6M | 1.9% | $51.3 |
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 Pertento Partners LLP first disclose a SIMO position in 13F-HR filings?
Pertento Partners LLP first reported SILICON MOTION TECHNOLOGY CO (SIMO) on its 13F-HR filing for the period ending 2023-09-30 (Q3 2023). The position has appeared on 11 reported quarters within Pactolio's tracked window.
What was Pertento Partners LLP's most recent quarter-over-quarter share-count change in SIMO?
Between Q4 2025 and Q1 2026, Pertento Partners LLP reduced its SIMO position by 738,875 shares (-64.2%), leaving 412,536 shares at a market value of $46.3M.
Does the implied price-per-share represent Pertento Partners LLP's cost basis in SIMO?
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.