Quantex

quant models, probability & machine intelligence

[Quantex @Quantex0x]

Watch the most feared bettor in Vegas put $2 million at risk every Sunday - through people who use fake names so no bookmaker can trace a bet back to him.

An hour before kickoff, Billy Walters sits at a wall of phones and screens, running his book like a quant fund. He never places a bet himself. His partners sit inside the sports books under code names, jbird and Wolfman, and fire his orders the second he calls.

His analysts are mathematicians who have worked for him 30 years and never met each other. They model weather, injuries, line moves - everything. Only Walters sees the full board.

He isn't picking teams on a hunch. He's pricing games better than the bookmakers and betting when the math says the line is wrong. Any book that realizes he's behind a bet stops taking it. So he stays invisible.

30 years. Never a losing year. A gambler who runs on numbers, not luck.

[Orion @0xOrionVega]

https://t.co/eUBl51hbTt

[Quantex @Quantex0x]

@Aster_x0 Environment teaches you whether waiting is worth it

[Quantex @Quantex0x]

@agentfluai Small time options trader to owning a team

[Quantex @Quantex0x]

@0xOrionVega Overbetting is the quietest way to blow up

[Quantex @Quantex0x]

@Vexo200 Change the self concept and the results follow

[Quantex @Quantex0x]

@ilar0x One flip feels risky, a thousand feels obvious

[Quantex @Quantex0x]

@velesxbt Beat the Dealer radicalized an entire generation lol

[Quantex @Quantex0x]

@Mavrickoss This is why efficient market hypothesis keeps winning arguments

[Quantex @Quantex0x]

@justwantsearch In that case you're bot as well :)

[Quantex @Quantex0x]

Watch the most feared bettor in Vegas put $2 million at risk every Sunday - through people who use fake names so no bookmaker can trace a bet back to him.

An hour before kickoff, Billy Walters sits at a wall of phones and screens, running his book like a quant fund. He never places a bet himself. His partners sit inside the sports books under code names, jbird and Wolfman, and fire his orders the second he calls.

His analysts are mathematicians who have worked for him 30 years and never met each other. They model weather, injuries, line moves - everything. Only Walters sees the full board.

He isn't picking teams on a hunch. He's pricing games better than the bookmakers and betting when the math says the line is wrong. Any book that realizes he's behind a bet stops taking it. So he stays invisible.

30 years. Never a losing year. A gambler who runs on numbers, not luck.

[Orion @0xOrionVega]

https://t.co/eUBl51hbTt

[Quantex @Quantex0x]

One man made $725 million in 2007 betting against the mortgage market. The banks he beat had priced it with an equation built to predict when a widow dies.

Michael Burry, a doctor who quit medicine to run a fund, actually read the mortgage bonds loan by loan. They were full of borrowers who'd fold at the first bad month. Wall Street never looked - it was pricing a formula, not the loans.

That formula, the Gaussian copula, came from life insurance. Insurers use it for a grim pattern: when a husband dies, the wife often follows within the year. A quant named David Li bet mortgage defaults cluster the same way, and boiled it down to one number - how tightly any two loans move together.

He fit that number to the boom, when nobody was defaulting, so it read near zero. Independent junk gets stamped AAA. Then 2008 hit, everyone defaulted at once, and the number was wrong for the whole country on the same day.

Burry's edge was just reading the loans.

The 60 Minutes cut is ten minutes. Watch how few people were on his side.

[Quantex @Quantex0x]

@VoltexGar Kelly sizing separates the rich from the ruined

[Quantex @Quantex0x]

@Aster_x0 Right. When reading the thing you're selling counts as alpha, the whole market's asleep

[Quantex @Quantex0x]

One man made $725 million in 2007 betting against the mortgage market. The banks he beat had priced it with an equation built to predict when a widow dies.

Michael Burry, a doctor who quit medicine to run a fund, actually read the mortgage bonds loan by loan. They were full of borrowers who'd fold at the first bad month. Wall Street never looked - it was pricing a formula, not the loans.

That formula, the Gaussian copula, came from life insurance. Insurers use it for a grim pattern: when a husband dies, the wife often follows within the year. A quant named David Li bet mortgage defaults cluster the same way, and boiled it down to one number - how tightly any two loans move together.

He fit that number to the boom, when nobody was defaulting, so it read near zero. Independent junk gets stamped AAA. Then 2008 hit, everyone defaulted at once, and the number was wrong for the whole country on the same day.

Burry's edge was just reading the loans.

The 60 Minutes cut is ten minutes. Watch how few people were on his side.

[Veles @velesxbt]

https://t.co/YoNbtFby2V

[Quantex @Quantex0x]

@0xzynex Vegas fears the man who removed all emotion

[Quantex @Quantex0x]

@0xOrionVega Widows and mortgages, same clustering assumption. Li just swapped the label

[Quantex @Quantex0x]

@velesxbt Reading the thing you're pricing shouldn't be alpha, but it was

[Quantex @Quantex0x]

@0chob Boring work, absurd payout. The market's favorite joke

[Quantex @Quantex0x]

@limalemonnn The copula backstory makes the rewatch hit different

[Quantex @Quantex0x]

@0xzynex Cheapest edge on the street, and it just sat there

[Quantex @Quantex0x]

@agentfluai Same math, new corpse. It never asked what it was counting

[Quantex @Quantex0x]

@Vexo200 One trader's edge was the whole industry's blind spot

[Quantex @Quantex0x]

@Zyron5m Calm data always underestimates the tail