---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-051029"
form_type: "8-K"
ticker: "MPWR"
cik: "0001280452"
company_name: "MONOLITHIC POWER SYSTEMS INC"
filed_at: "2026-07-30T20:01:11+00:00"
generated_at: "2026-07-30T20:02:14.852841+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Monolithic Power Systems Q2 revenue $980.6M, up 47.6% YoY; EPS $5.22 GAAP, $6.50 non-GAAP

## Summary
- Record quarterly revenue of $980.6M, up 21.9% QoQ and 47.6% YoY; Enterprise Data revenue surged 164.3% YoY to $380.6M.
- GAAP diluted EPS $5.22 vs $2.81 YoY; non-GAAP diluted EPS $6.50 vs $4.21 YoY; non-GAAP tax rate flat at 15%.
- Q3 2026 guidance: revenue $1,140M-$1,160M, GAAP gross margin 55.2%-55.8%, non-GAAP gross margin 55.4%-56.0%.
- Board authorized additional $500M stock repurchase, bringing total authorization to $1B.
- All end markets grew sequentially; initial orders for DDR5 memory components and sampling of 800V AC/DC products.

## SEC filing metadata
- accession: 0001628280-26-051029
- form_type: 8-K
- ticker: MPWR
- cik: 0001280452
- company_name: MONOLITHIC POWER SYSTEMS INC
- filed_at: 2026-07-30T20:01:11+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1280452/000162828026051029/0001628280-26-051029-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1280452/000162828026051029/mpwr-20260730.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-051029
- JSON: https://secwatch.observer/filing/0001628280-26-051029.json
- Plain text: https://secwatch.observer/filing/0001628280-26-051029.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.