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a risk analyst at two sigma told me something over drinks i still think about "our models are right 54% of the time. retail models can be right 60% and still blow up" i asked him why "you trade every day. we don't" two sigma sits completely flat roughly...

120,924 просмотров • 2 месяцев назад •via X (Twitter)

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a flood scientist accidentally solved stock market prediction in 1951 he wasn't studying markets. he was modeling nile river overflow patterns for the egyptian government harold hurst discovered something that broke the assumptions behind modern finance: natural systems have "memory" - the recent past predicts the near future at a statistically measurable level quants found his paper buried in hydrology journals 40 years later, built regime-detection desks around it, kept it off retail radar the number is called the Hurst Exponent. single value, 0 to 1: above 0.5 = market has momentum, recent moves predict continuation below 0.5 = market is mean-reverting, extremes snap back to the average at 0.5 = pure random walk, no edge exists SPY's 3-year hurst on daily closes: 0.61 not random. statistically confirmed to trend. a flood hydrologist proved it before most traders alive were born when H > 0.58: trend-following has positive expected value - bet with momentum, hold longer when H < 0.42: mean reversion has the edge - fade the extremes, take fast profits you're not predicting direction. you're detecting the regime first, then picking the right strategy for it this is the actual reason 90% of traders lose - not bad entries, not bad exits, not bad indicators - just using a trend strategy in a mean-reverting market and a mean-reversion strategy in a trending one wrong tool. wrong regime. every time formula is in any time series textbook. raw data is free on yahoo finance. implementation is 40 lines of python Bookmark this before you forget they built billion-dollar regime-detection desks on a nile river scientist's math while you were drawing support lines on the wrong type of market entirely

Livsun

15,492 просмотров • 23 дней назад

robert engle won the nobel prize in economics for proving something hedge funds already knew they never bothered to mention it to retail price direction is mostly noise. but volatility? predictable. mathematically, provably, across every liquid market ever studied it clusters - that's not a pattern someone found, it's a structural law. high vol today predicts high vol tomorrow with 70%+ historical accuracy the model is called GARCH. published in every econometrics textbook on earth, chapter 4, about 60 lines of python to run quant desks at citadel and D.E. Shaw don't ask "will it go up?" - they ask "will the next move be large or small?" because sizing correctly inside a vol regime is worth more than being right on direction a trader right 48% of the time who sizes with vol awareness beats someone right 62% of the time sizing blindly - every time, over any long enough sample run it on 10 years of SPY data: > low vol state -> 74% chance next session stays low vol > vol spike -> 81% chance next session is also elevated now you're not predicting markets. you're reading a state machine the market keeps filling in for you every single session with real data the predictable part of markets was never price direction it was the distribution of price. the size of the moves. which regime you're currently inside math is free, data is free, implementation is free you were just told to stare at candlesticks instead Bookmark this before the feed buries it

Hrundel75 🐷

814,505 просмотров • 1 месяц назад

a quant at a prop firm showed me a 5x5 grid on a napkin said: > this is our entire edge. we don't predict price. we predict which box the market is in and where that box historically leads i didn't understand it for weeks. then it clicked never looked at a chart the same way since grid is called a Markov Chain transition matrix. the math is from 1906, it's in every probability textbook on earth and hedge funds use it because it asks a completely different question than retail traders ever ask retail: will this go up or down quant: what state is this market in, and where does this state typically go every market lives in one of maybe 5-6 states at any given moment tight range, volatility compression, trending with momentum, post-spike reversal, pre-breakout coil not random labels - clusters you identify from actual data using volatility, volume, and momentum readings stacked together once you have the states, you build the matrix: P(state 2 -> state 4) = 73% P(state 4 -> state 1) = 61% P(state 1 -> state 3) = 68% each cell is a historical probability. now when the market is in state 2, you're not guessing you're betting on 73% historical completion. you size it with Kelly. you take the trade when the math says to, not when it feels right i built this on BTC using 2 years of 4-hour data. identified 5 states one i labeled "volatility compression below 20-day mean for 6+ consecutive candles" transitioned to a directional move above 1.8 ATR in 71% of cases average reward/risk on those trades: 5.4 that's not prediction. that's reading a probability table the market keeps filling in for you every single day the part that should bother you: the data to build this is free. the framework is in any quant textbook python to implement it is maybe 200 lines what Renaissance Technologies has that you don't isn't secret data or proprietary signals it's this framework applied to higher-resolution data with more sophisticated state definitions you're not missing information you're asking the wrong question every single time you open a chart

Livsun

189,343 просмотров • 4 месяцев назад

citadel doesn't analyze 500 stocks they compress them to 5 hidden forces - then trade the forces most people saw the math behind this in a stats class and scrolled past it. nobody told them it was worth $30 billion a year technique is called PCA - principal component analysis Karl Pearson published it in 1901 in a free journal. it's in every stats textbook on earth here's what it does: you feed it 10 years of daily returns across 500 stocks it ignores earnings reports, management teams, every narrative retail obsesses over it finds underlying forces moving groups of stocks together without anyone naming them what comes out: > component 1 - broad market direction (~45% of all movement) > 2 - growth vs value tilt (~12%) > 3 - sector rotation (~8%) > 4 - volatility regime (~5%) > 5 - liquidity premium (~3%) five numbers explain 73% of everything moving in markets a quant desk doesn't ask "will NVDA go up tomorrow" it asks: which regime are we in, and where does this regime historically lead portfolio built around forces, not tickers if component 3 signals sector rotation at a historical inflection, they rotate without reading a single 10-K Two Sigma runs this across equities, bonds, commodities and currencies simultaneously Save this before someone turns it into a $2,000 data to build this is free - Ken French's factor library, CRSP, any linear algebra textbook 150 lines of python is the whole engine what Renaissance has isn't secret data or better intel

Livsun

21,476 просмотров • 2 месяцев назад

A warning to Americans about living under Sharia Law from a woman who used to live in Iran - “In Iran, you can get arrested for walking a dog and then they can take your dog away because according to Islam, dogs are najis, which means unclean - In Iran, you will get arrested. Not can, will if you're a female solo singer, it is against the law - I Iran, not that you have to wear hijab, but if your hijab is not to the liking of the regime forces, they can push you forcefully into a van and take you to jail. And then things that happen in those jails, let's just say that they're not ethical - In Iran, you are not allowed to change your religion or choose your religion. If you do so, you will be executed - In Iran, they would line us up as children force hijab on us and force us to chant Death to America. I wouldn't call that school. I would call that a cult that is trying to brainwash children into a terrorist mindset. - In Iran, there are stations with regime forces and they can stop your car and see if the person next to you is a girlfriend, a boyfriend, or you're married to. If you're married to them, you can get arrested in 5 years. Imagine that a Big Mac went from $6 to $600. That's exactly what happened in Iran. Well, roughly. I think it's even more than that. And everything. I'm telling you, it's not even the worst thing that's happening in Iran. Every time people request a regime change and they start to protest, the regime shuts off the internet and starts shooting people with military grade weapons, children. Regime forces in the past two to three weeks have killed more than 50,000 people. So yeah, if you have opinions about how Iranians should feel, perhaps you should go to Iran, live with the regime and maybe raise a child or two, and then we can speak about it.”

Wall Street Apes

504,308 просмотров • 6 месяцев назад

🚨JOHN BOLTON VS AFSHIN RATTANSI: REGIME CHANGE IN IRAN Bolton: ‘I don’t think the war is over because I don’t think we’ve done the necessary work to solve the problem in the way I think it has to be solved, which is through regime change…but it’s not clear to me at this point that Trump really knows what his objective is.’ Afshin Rattansi: ‘What do you mean, regime change? I mean, you’d back ground forces going in?’ Bolton: ‘I don’t think it’s necessary. I think if you look at Iran, with I think a sophisticated, well-educated population, this regime was in trouble long before the war started. For years its economy has been in desperate straits. That’s what the people were demonstrating about all over Iran in December and January.’ Afshin: ‘The economic situation isn’t necessarily demonstrating a demand for a complete change of regime.’ Bolton: ‘Not only is the economy bad, they’re running out of water. The irrigation policies of the government to develop what Ayatollah Khomeini wanted, which was complete agricultural autonomy, has devastated the groundwater. They’re even talking about having to move the capital out of Tehran. That’s how bad it is.’ Afshin: ‘Flint, Michigan had polluted water, that’s not a reason for changing the regime in the United States.’ —Watch the full interview with John Bolton, Donald Trump’s former National Security Adviser in the quoted post below👇 John Bolton

New Order with Afshin Rattansi

23,226 просмотров • 4 месяцев назад

Your strategy isn't losing because it's bad. It's losing because the market changed and nobody told you. Markets have moods: trend, chop, panic. Every strategy only works inside one of them. And when the mood flips, no bell rings. Your equity curve is the bell - by the time it rings, you're already down 30%. Quant desks don't wait for the bell. They run 120-year-old math, a Hidden Markov Model, that reads the market's hidden state live and calls the flip days before the chart shows it. Horizon packed that whole desk setup into one typed sentence. Public launch July 15 - get on the waitlist now: Here's the proof, from a real pair of runs. A BTC breakout kept shorting into an uptrend and finished -50.68%, the short book alone bleeding $75,836. The exact same idea, with one added sentence about the regime: +41.15%. Same entries. Same logic. A 91-point swing from one sentence. You don't have to build any of this. Horizon fits the model, watches the regime every bar, and switches your strategy on its own - you just describe what you want. Half your losing trades were probably this exact thing: right idea, wrong market, no way to see it. All this time you've been blaming your discipline, your entries, your psychology. The real question was one you never asked: what state is the market in right now? Bookmark this and read the full framework below - it's the exact regime math desks run on live money, written so you can use it Monday.

cvxv666

98,041 просмотров • 2 месяцев назад