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quant desks run Apollo navigation math on their trading terminals and nobody told you Rudolf Kalman published the equation in 1960 NASA used it 9 years later to guide three astronauts through 240,000 miles of space same filter. different problem for NASA: strip sensor noise in real time to...

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83% of options expire worthless wall street has known this since 1973, it's literally in the original black-scholes derivation they just never told retail which side of that number to stand on implied volatility - what options cost - chronically overstates what volatility actually delivers. not sometimes. structurally. for 40 years straight the gap has a name: volatility risk premium IV runs at 22%. actual realized vol delivers 14%. you pocketed 8 vol points without predicting a single direction, a single earnings move, a single fed decision quant vol desks have been harvesting this gap the whole time: > pull 30-day realized vol from price history (free on any data terminal) > compare to current IV on the options chain (visible on any broker platform) > enter when the spread sits 1.5 standard deviations above its own historical mean > kelly-size based on the 83% historical close rate the spread always closes. vol reverts. that's not a prediction - it's what 40 years of options data shows without a single exception insurance companies don't predict which house burns. they write enough policies that 83% probability compounds into something inevitable every single quarter quant desks run the exact same logic on options markets retail keeps buying calls hoping to be directionally right once. the firm on the other side doesn't care which way price goes the data to build this yourself has been public since 1973. the math is 4 lines of python. every derivatives textbook covers it in chapter 2 Bookmark this they've been on the other side of your trades the whole time

Livsun

81,293 views • 13 days ago

a citadel options trader told me the one concept they test first in every quant interview and it's been sitting on a free website for years not a hedge fund textbook, not a $3,000 prep program. a free course syllabus - options greeks, volatility, quizzes - publicly available, almost nobody applying has ever opened it concept is expected value across a probability distribution retail looks at a chart and asks which direction. quant looks at expected payout across every possible outcome and asks if that number beats the cost of the trade - completely different question options pricing is just EV made rigorous fair value of any position = sum of (each outcome's probability x its payoff), discounted back. that formula is in every intro stats course and every free options curriculum these firms post publicly citadel's first round isn't a stock pitch or a DCF it's a market-making problem: "set me a bid and ask on a coin flip" if you can solve that fast and size it correctly, you can price any derivative on earth prep is documented in 6 categories: probability, greeks, volatility, mental math, coding, microstructure firms don't want you pattern-matching to old trades. they want raw EV instinct - and that's in free courses that have been online for years entry-level quant traders at these firms start at $300k. senior traders clear $650k+ most people never make it past round 1. not because they weren't smart - because nobody told them what the test was actually measuring Bookmark this they kept you reading charts while they were drilling expected value at 2am

Livsun

25,988 views • 2 months ago

the entire math roadmap for quant trading fits on a single page and this video breaks it down in 60 seconds probability. linear algebra. calculus. statistics four subjects. every quant strategy ever built sits on top of these four probability comes first because everything else depends on it conditional probability, Bayes' theorem, expected value this is the actual language trading models are written in linear algebra is how you stop thinking about one stock and start thinking about 5,000 at once factor models, PCA, portfolio optimization Bridgewater, AQR, Two Sigma all run on matrix math calculus is derivatives pricing. Black-Scholes is a PDE if you trade options without understanding the equation underneath them, you're reading the answer key without knowing the question statistics is the filter regression, hypothesis testing, distribution fitting this is how Renaissance decides if a signal is real or if a backtest got lucky here's what nobody tells retail: every indicator you've ever used is a dumbed-down version of one of these four subjects RSI is momentum statistics. Bollinger Bands are standard deviation. MACD is signal processing they took the math, removed the part that makes it useful, and sold you the wrapper > this roadmap: free, 60 seconds, in this video > same four subjects tested at every quant interview since the 1990s > time to learn properly: 6-8 months with free resources > what they unlock: the actual language Wall Street runs on the information was never gated it was just never packaged for the people who needed it most full breakdown in the video below

delost

34,703 views • 2 months ago

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 🐷

803,763 views • 6 days ago

an ex-Goldman banker said the key to understanding markets is reading 3 WSJ articles a day a quant at Renaissance would tell you that's the exact wrong input here's why the Wall Street Journal publishes after the move by the time you read "tech stocks fall on rate fears" the move already happened, the positioning already shifted, and every algorithm already repriced news explains what happened. it doesn't predict what's next quant desks don't read news to form trade ideas they measure whether news has a statistically significant effect on price after controlling for everything else the answer, across decades of academic research: individual news articles explain less than 0.5% of daily price variance the other 99.5% is flow, positioning, regime, volatility structure, and cross-asset correlation none of which shows up in a WSJ headline this is the Goldman mindset vs the quant mindset Goldman: read narratives, form opinions, act on conviction Renaissance: measure everything, strip out noise, trade only what survives statistical testing one produced traders who sound smart at dinner parties the other produced $100 billion in profit over 30 years > WSJ subscription: $468/year > SEC EDGAR data: free > FRED economic data: free > exchange-level order flow: free > academic papers on news impact studies: free on ArXiv since the 2000s the banker tells you to read the news the quant tells you to measure whether the news matters those are not the same instruction full breakdown in the video below

delost

15,317 views • 2 months ago

A lot of people still don’t understand how ruthless systematic trading can be. This is exactly why I run a quant fund alongside everything else I do. The quant fund is built to measure momentum on the 4 hour timeframe. Nothing more. Nothing less. No opinions. No emotions. No discretion. It tracks 15 core stocks and follows the same rule set every single time. When the 4 hour signal line turns green and increases, it buys. When it rolls over and turns red, it exits. Period. This fund does not care what I think. It does not care what I want. It does not care about headlines, FOMC, earnings or narratives. It follows the signal to a T. That’s what makes it so powerful. This is completely separate from my main fund, which is longer term positioning based on monthly and weekly signal lines across sectors. It’s also completely separate from my options trades, which are built around a 2–3 month outlook and larger macro structure. Three different approaches. Three different time horizons. Three different objectives. The quant fund exists for one reason. To systematically capture short term momentum while removing every human weakness that causes traders to fail. The part most people can’t handle? They want to intervene. They want to override. They want to “feel” their way through it. Quant trading doesn’t allow that and that’s why it works. If you want discretion, opinions and emotion… this isn’t for you. If you want structure, probability and discipline… this is how accounts actually compound. That’s everything you need to know about my quant fund and the 4 hour signal line that drives it. THANK YOU FOR YOUR ATTENTION TO THIS MATTER! — TJ #SP500 #SPY #QQQ #TSLA #PLTR #NVDA #AAPL #Bitcoin #Crypto #StockMarket

TraderJonesy

43,814 views • 6 months ago