Monolithic Power Systems heads into its June 11 print with options traders more defensively positioned than at any point in months — and that caution sits against a backdrop of notable insider selling at the top.
The clearest pre-earnings signal is in options. The put/call ratio has climbed to 1.32, more than two standard deviations above its 20-day mean of 1.14. That's the most defensive options posture MPWR has seen in recent months, and it has intensified sharply over the past week as the print approached — the PCR stood near 1.00 just a month ago. The stock itself is down 5.7% on the week and 4.3% over the past month, closing at $1,532. Peers have broadly held up better: AMAT gained 7.4% on the week and LRCX added 2.3%, making MPWR's slide look company-specific rather than sector-driven.
Insider activity adds weight to the cautious tone. Over the past 90 days, insiders net sold roughly $104.9 million worth of stock. The largest single seller was CEO and founder Michael Hsing, who shed approximately 11,350 shares across multiple transactions on May 18 alone — generating around $22.8 million in proceeds at prices between $1,463 and $1,508. The General Counsel followed with two separate sales totalling more than 12,500 shares near $1,586–$1,700, raising another $20.8 million. Selling at these levels, ahead of earnings, is a pattern worth watching — particularly given the stock has since retreated back toward the lower end of that range.
Short interest, by contrast, tells a less charged story. Bears represent just 3.8% of the free float — and that position has been trimmed by roughly 6.4% over the past week. Borrow is easy and cheap, with availability running at 1,677% and the cost to borrow sitting at 0.45%. There is no structural squeeze pressure or crowded short thesis building into the print.
The Street's last formal round of analyst moves, clustered around the May 1 quarter results, was uniformly constructive — multiple firms raised targets into the $1,750–$2,000 range, citing AI server and enterprise data demand. The consensus mean target now stands at $1,797, roughly 17% above the current price. However, those revisions are now six weeks old and no major firm has moved since; the formal analyst consensus has not caught up with the recent price weakness or the elevated PCR.
Thursday's print will test whether MPWR's AI-driven enterprise momentum can justify a valuation trading at 58x trailing earnings and nearly 50x EV/EBITDA — multiples that leave limited room for any guidance caution, even with the borrow market relaxed and short sellers backing away.
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