Insider Cluster (2 insiders) ·Filed Aug 6, 2026

MPWR

MONOLITHIC POWER SYSTEMS, INC.
NEUTRAL
Impact 3/10
Horizonimmediate Processed1mo ago
Insider cluster: 2 insiders, $181K total
Actionable Insight • Neutral

The insider sales are too small to warrant a bearish read on MPWR. Focus on the Q2 earnings trajectory — Enterprise Data revenue grew 164% YoY and Q3 guidance well above consensus. The $500M buyback authorization signals capital return confidence. Ignore these trades.

DirectionNeutral
Confidencehigh
Horizonimmediate
Latest settled — T+20d
MPWR ▼ -10.43% at T+20d
NEUTRAL call ✗ call lost -10.43% · α vs SPY -11.03% · entry $1,350.21 → $1,209.41
Next anchor: T+60d in 27d
Latest observation: T+37 +20.49% FF3 residual α
Entry anchored
Aug 5, 07:37 PM ET
via 1-min bar
T+1d
+3.09%
call +3.09% · α +2.48%
$1,391.91
settled 8w ago
T+5d
+0.58%
call +0.58% · α -0.63%
$1,358.05
settled 7w ago
T+20d
-10.43%
call -10.43% · α -11.03%
$1,209.41
settled 4w ago
T+60d
—
call — · α —
—
in 27d

Price Chart

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Executive Summary

Two MPWR insiders, the EVP of WW Sales & Marketing and the Interim CFO, sold a combined $181K in open-market sales during the week following a massive Q2 earnings beat. These sales represent 0.00027% of the $66.8B market cap — trivial in proportion and consistent with routine portfolio diversification, not a bearish signal. The cluster's economic insignificance, combined with the strong earnings context (revenue +47.6% YoY, raised guidance), keeps the filing neutral despite the selling direction.

Key Financial Metrics

Direction
selling
Total Value
$181.0K
Insiders
2

Key Facts

  • Two insiders sold a total of $181K in open-market sales over a 3-day window post-earnings
  • The $181K total is 0.00027% of MPWR's $66.8B market cap — well below the 0.1% triviality threshold
  • EVP Sciammas also made a non-cash gift of 25,000 shares ($0 value), which has no economic signal
  • The cluster follows a strong Q2 2026 earnings report with revenue $980.6M (+47.6% YoY) and Q3 guidance above consensus
  • Prior insider trading data shows 8 sells totaling $4.4M in the last 30 days, consistent with ongoing routine selling

Financial Impact

Total open-market sales of $181K — immaterial relative to $66.8B market cap

insider_holdings

Risk Factors

  • Insider selling pattern over 30 days ($4.4M) could be perceived negatively by momentum traders, though all sales are tiny relative to market cap
  • Semicondutor sector cyclicality remains a macro overhang despite strong AI demand

Market Snapshot

Exchange
Nasdaq
Sector
Semiconductors & Related Devices
Analyst Consensus
83% bullish (23 analysts)

Investment Themes

Semiconductors

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-MPWR-1786082665504
30 reports for MPWR
Performance horizon
80% Hit rate 4 of 5 directional calls best @ T+20▲ +21.20%Apr 13, 2026
Filters
Rows
Reports for MPWR — sortable, filterable
TypeNow
Sep 10, 2026
21d ago
Press Release
NEUTRAL ★ 2/10
$1,234.46 $1,217.80▼ −1.35%▼ −1.13%$1,452.76 (+17.68%)
Aug 26, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$1,311.08 $1,213.65▼ −7.43%▼ −7.70%$1,452.76 (+10.81%)
Aug 26, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$1,311.08 $1,219.36▼ −7.00%▼ −6.23%$1,452.76 (+10.81%)
Aug 24, 2026
5w ago
Court Ruling
BULLISH ★ 6/10
$1,285.03 $1,261.99▼ −1.79%▼ −2.26%$1,452.76 (+13.05%)
Aug 13, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$1,362.55 $1,310.60▼ −3.81%▼ −1.85%$1,452.76 (+6.62%)
Aug 6, 2026
8w ago
Insider Cluster
NEUTRAL ★ 3/10
$1,350.21 $1,358.05▲ +0.58%▼ −0.63%$1,452.76 (+7.60%)
Jul 30, 2026
9w ago
8-K
BULLISH ★ 8/10
$1,426.03 $1,391.91▼ −2.39%▼ −5.90%$1,452.76 (+1.87%)
Jun 12, 2026
15w ago
Press Release
NEUTRAL ★ 2/10
$1,652.29 $1,537.88▼ −6.92%▼ −5.54%$1,452.76 (−12.08%)
Jun 3, 2026
17w ago
Insider Cluster
NEUTRAL ★ 2/10
$1,650.98 $1,589.55▼ −3.72%▼ −1.17%$1,452.76 (−12.01%)
May 29, 2026
17w ago
Insider Cluster
NEUTRAL ★ 2/10
$1,537.90 $1,481.05▼ −3.70%▼ −0.95%$1,452.76 (−5.54%)
Showing 10 of 30

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Report published Aug 7, 2026