This Chip Stock Soared 325%. Why One Investor Still Sold $89 Million Worth
Key Points
Pertento Partners reduced its SIMO holding by 738,875 shares; the estimated trade value was $89.68 million (based on quarterly average pricing).
The quarter-end SIMO position value fell by $60.41 million, reflecting both share sales and price changes over the period.
Post-trade, the fund held 412,536 SIMO shares valued at $46.32 million.
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Pertento Partners cut its stake in Silicon Motion Technology (NASDAQ:SIMO) in the first quarter, selling 738,875 shares in an estimated $89.68 million trade based on quarterly average pricing, according to a May 14, 2026, SEC filing.
What happened
Pertento Partners LLP disclosed in a May 14, 2026, SEC filing that it reduced its position in Silicon Motion Technology by 738,875 shares during the first quarter. The estimated value of shares sold was $89.68 million, calculated using the average closing price from January through March 2026. The fund’s quarter-end SIMO position was valued at $46.32 million, with total position value changing by $60.41 million over the period.
What else to know
- Top holdings post-filing:
- NYSE:USFD: $170.91 million (18.1% of AUM)
- NASDAQ:IESC: $110.18 million (11.7% of AUM)
- NYSE:PRMB: $99.80 million (10.6% of AUM)
- NASDAQ:CLBT: $91.81 million (9.7% of AUM)
- NASDAQ:PSMT: $78.96 million (8.4% of AUM)
- As of Friday, SIMO shares were priced at $276.14, up about 325% over the past year and well outperforming the S&P 500, which is instead up about 28% in the same period.
Company overview
| Metric | Value |
|---|---|
| Price (as of Friday) | $276.14 |
| Market Capitalization | $9.4 billion |
| Revenue (TTM) | $1.06 billion |
| Net Income (TTM) | $169.97 million |
Company snapshot
- SIMO designs and markets NAND flash controllers for solid-state drives (SSDs), embedded storage, and specialized SSDs for industrial, commercial, and automotive applications.
- The firm generates revenue primarily by selling controller chips and storage solutions to device manufacturers, module makers, and hyperscale data center operators.
- It serves NAND flash makers, electronics OEMs, hyperscalers, and independent electronics distributors across global markets, including Asia, the United States, and Europe.
Silicon Motion Technology is a leading supplier of NAND flash controllers and storage solutions, operating at scale with a global customer base. The company leverages proprietary technology and a diversified product portfolio to address the needs of computing, enterprise, and industrial storage markets. Its established relationships with major OEMs and flash memory producers underpin a competitive edge in the fast-evolving semiconductor sector.
What this transaction means for investors
This sale ultimately looks more like profit-taking after a spectacular run than a loss of confidence in the business. When a stock has climbed more than 300% in a year, even committed shareholders often rebalance positions and lock in gains.
What's interesting is that the trim comes as Silicon Motion's underlying business appears to be accelerating. First-quarter revenue surged 105% year over year to $342.1 million, while net income climbed to $66.8 million, or $1.97 per diluted ADS. The company also guided for another strong quarter ahead, forecasting revenue growth of 15% to 20% sequentially.
Management pointed to market share gains in embedded storage controllers, growing demand for automotive products, and expanding exposure to AI infrastructure. Perhaps most notably, Silicon Motion said its enterprise-focused MonTitan platform will enter volume production earlier than expected, with customer ramps planned across five tier-one cloud service providers later this year.
For long-term investors, the key takeaway is that this wasn't a full exit. Pertento still held a meaningful $46.3 million position at quarter-end. That suggests the fund may be reducing risk after a huge rally while maintaining exposure to what could be one of the more compelling AI-adjacent growth stories in the storage semiconductor market.
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Jonathan Ponciano has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Cellebrite, Ies, and Primo Brands. The Motley Fool has a disclosure policy.
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