A mysterious Japanese day trader claims to have made $34 million Monday

Japan day trader

(Twitter.com/cissan_9984)

A mysterious Japanese day trader claims to have made $34 million Monday when global markets got hammered, according to Bloomberg.

Jason Clenfield and Yuji Nakamura at Bloomberg said the trader shared online brokerage statements to support his claims.

The 36-year-old married father of three, who uses the pseudonym "CIS," became famous after he was profiled by Bloomberg Markets magazine last year. He told Bloomberg he prefers to remain anonymous because he's fearful of being robbed or extorted.

And he has good reason. He claims to have made around $150 million in the last 10 years trading primarily in an apartment bedroom in his pajamas.

Aside from trading, CIS's other interests include video games and online poker and blackjack.

He's on Twitter under the handle @cissan_9984. He shared some of his trading updates to his more than 57,200 followers.

We've pulled out a few that have been translated into English:

Japanese day trader

(Twitter.com/cissan_9984)

Screen Shot 2015 08 28 at 9.39.52 AM

(Twitter.com/cissan_9984)

Screen Shot 2015 08 28 at 9.40.39 AM

(Twitter.com/cissan_9984)

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