Monolithic Power Systems heads into its April 30 Q1 earnings report with short sellers in retreat and options traders the least bearish they have been in months.
The most striking positioning shift is in short interest. It fell 17% in a single session on April 24, dropping to 3.8% of the free float — a level that, after weeks of creeping higher through early April, now sits near its lowest point of the recent range. Borrowing costs are almost negligible at 0.48%, and utilization at 7.3% is well below the 52-week high of 10.9%, signalling no meaningful squeeze pressure in the lending market. That combination of falling short interest and cheap borrow points to a market where bears are covering, not pressing.
Options positioning reinforces the picture. The put/call ratio has eased to 1.07, more than one standard deviation below its 20-day average of 1.19. That is close to the 52-week low of 0.98 and a sharp reversal from the heavily defensive readings above 1.30 seen through March. In context, the stock has surged 51% over the past month to $1,587.57, pulling back 2.7% on Monday. The weekly gain of 6.5% tracks closely with peers: ADI rose 7.6% on the week, ON 18.5%, and 10.3%, suggesting the move is sector-wide rather than MPWR-specific.
The bull-bear debate centres on two tensions. Bulls point to MPWR's track record of execution, proprietary BCD process technology, and exposure to enterprise data — a segment growing faster than the broader analog market. Stifel raised its target to $1,500 on April 16 after maintaining its Buy. The broader analyst community has been directionally constructive, with several firms lifting targets in the wake of the Q4 print in February, though the mean target of $1,418 now sits modestly below the current price — suggesting that the stock's 51% monthly run has outpaced even optimistic Street estimates. Bears flag the CFO transition as a near-term overhang, alongside the usual risks in a cyclical, macro-sensitive industry. The EV/EBITDA multiple of 58.5x and a P/E of 71x leave little room for a miss.
One ownership detail stands out. Fidelity added 406,000 shares in the most recent quarter, while BlackRock added 235,000 — both meaningful accumulations relative to their existing positions. The General Counsel sold roughly $10 million in shares on April 8 across multiple tranches, though at prices well below today's level; the 90-day net insider figure remains positive at $43 million, mostly reflecting earlier option exercises rather than outright conviction buying.
The April 30 print is therefore less about whether MPWR can grow and more about whether management can articulate a margin and data-centre revenue trajectory that justifies a valuation the stock has only just grown into.
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