MPWR Options Skew Spikes as Insiders Sell Ahead of Earnings

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.