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Photo illustration: Rebecca Zisser / Axios

Sam Altman is stepping down as president of influential startup incubator Y Combinator, in order to spend more time on outside interests like the OpenAI research organization. He'll transition into a chairman role, with many of his day-to-day responsibilities assumed by YC's partners.

Why it matters: YC is known for breeding unicorns, having incubated such startups as Airbnb, Dropbox, Stripe and Twitch.

Altman was YC's second-ever president, hand-picked in 2014 by predecessor Paul Graham, and has significantly expanded the program's scale. He tells Axios that he only sees the program continuing to grow:

"As capital and advice get more commoditized, network becomes the durable advantage."
— Altman

YC today also will confirm reports that it plans to move both its headquarters and its Demo Days from Mountain View into San Francisco. The new Demo Day also will be split into 2 tracks, due to the larger number of companies.

Go deeper

Momentum builds to ban lawmakers from trading stocks

Illustration: Sarah Grillo/Axios

Some progressive Democrats and MAGA Republicans are uniting on a proposal to ban sitting lawmakers from trading individual stocks, although it's unlikely that leadership will bring the bill up for a vote.

Why it matters: Members of Congress have great power to move stock prices, and great financial incentives to do so.

Thousands without power as "hazardous" winter storm lashes East Coast

Satellite imagery of the Northeastern U.S. taken by NOAA on Jan. 17. Photo: NOAA

A major winter storm was lashing much of the East Coast on Sunday, causing widespread power outages and disrupting travel over the holiday weekend.

The latest: The Weather Prediction Center said in a storm summary Monday that winter storm warnings are still in effect for portions of the Central Appalachians, Ohio Valley, interior Mid-Atlantic, and Northeast, while portions of the Central Appalachians and coastal New England are under high wind warnings.

Colleyville Rabbi credits survival to active-shooter training

Rabbi Charlie Cytron-Walker, one of the people taken hostage in a synagogue outside Fort Worth on Saturday, said in an interview with CBS Monday that he initially took in the man because he thought he needed shelter.

The big picture: Cytron-Walker said he spoke to the hostage taker, identified by the FBI as 44-year-old British national Malik Faisal Akram, for several minutes and made him tea before Akram took the rabbi and three other people hostage during Shabbat services for around 11 hours in Colleyville, Texas.