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8-K filings in October 2023, explained

84 material Form 8-K filings that 83 companies we cover made with the SEC in October 2023, each read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). All of them were written later, when past filings were added: a selection, not every 8-K of the month (see the note below).

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MPWRMONOLITHIC POWER SYSTEMS, INC. Oct 30, 4:01 PM ET

Monolithic Power Q3 revenue falls 4.1% from a year earlier; $640 million buyback

Negative earnings Written later 2.02 8.01

Monolithic Power Systems reported third-quarter 2023 results on October 30, 2023, with revenue down 4.1% from a year earlier and GAAP diluted earnings per share of $2.48, compared with $2.57 a year earlier. The same day, its board approved a $640 million stock repurchase program running through October 29, 2026, which the company says will be funded from available working capital and cash repatriated from its Bermuda subsidiary.

Q3 revenue was $474.9 million, up 7.6% from $441.1 million in Q2 2023 but down 4.1% from $495.4 million in Q3 2022.
Q3 GAAP diluted EPS was $2.48 vs. $2.57 a year earlier; non-GAAP diluted EPS was $3.08 vs. $3.53.
Fourth-quarter 2023 revenue outlook is $442.0 million to $462.0 million.
Board approved a $640 million repurchase program expiring October 29, 2026; repurchased shares will be retired.

Read the filing on SEC.gov ↗

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.

Briefs marked “Written later” were written in November 2026 for filings that were by then more than three weeks old, so months before mid-October 2026 hold a selection: every material 8-K of the past year for the 100 largest companies we cover and the last 15 important 8-Ks of every other one. Briefs the number check holds back are not shown or counted. Also: the last 45 days, briefs by company, A–Z and the live SEC filings wire.