One of the most vocal critics of the impact of the tech economy on San Francisco has been Supervisor Aaron Peskin. So it was no surprise when he tweeted that on Amazon’s Prime Day 2019, “I stand with the workers demanding a fair wage, job security and benefits while their corporate overloads (sic) reap billions in profits, evade taxes, kneecap our community corridors and facilitate border separations.”

Peskin should know. According to his statement of economic interest, he owns between $100,000 and $1 million in Amazon stock.

“It’s true. I bought it years ago for a handful of dollars as part of my self-employment pension plan,” Peskin said.

He said he had thought about unloading the stock, but opted to keep it after learning he would lose about a third of his profit to taxes.

This #PrimeDay2019 - and every other day - I stand with the workers demanding a fair wage, job security and benefits while their corporate overloads reap billions in profit, evade taxes, kneecap our commercial corridors and facilitate border separations. https://t.co/EppXwdq3Xh — Aaron Peskin (@AaronPeskin) July 15, 2019

As for being one of the tech titans he so often slams?

“It’s not even close enough of a stock share for anyone to listen to me,” Peskin said. “Although I don’t think Amazon was all that happy with my ban on the use of facial recognition technology in the city.”

San Francisco Chronicle columnist Phil Matier appears Sundays and Wednesdays. Matier can be seen on the KPIX-TV morning and evening news. He can also be heard on KCBS radio Monday through Friday at 7:50 a.m. and 5:50 p.m. Got a tip? Call 415-777-8815, or email pmatier@sfchronicle.com. Twitter: @philmatier