Every trading edge ever discovered has either died or is in the process of dying. That sounds dramatic. It is also literally true. The history of markets is a graveyard of strategies that worked beautifully for a while and then stopped.
If you are wondering why your favorite setup quietly stopped paying you, you are not crazy. You are just running into the most reliable law in this business: edge decays.
The short museum tour
Walk back through the last 50 years and watch edges go extinct.
- 1970s. Just owning stocks. The equity premium was huge and most pros were terrible. Sit on Coca-Cola, beat the average money manager. Buffett's whole early career.
- 1980s. Statistical arbitrage. Pairs trading. Anyone who could code up cointegration in C made money for years. Morgan Stanley's APT desk literally minted billionaires.
- 1990s. Information edge. If you could call the CFO and get an unfiltered read, or if you had a Bloomberg before everyone did, you ate. Decimalization and Reg FD nuked most of that.
- 2000s. Speed. HFTs colocating servers next to exchanges, milliseconds turning into microseconds, microseconds turning into nanoseconds. Latency arbitrage built entire companies (Virtu, Citadel Securities). Then everyone got fast and the easy money went away.
- 2010s. Factors. Quality, momentum, low-vol, value. Smart beta ETFs democratized factor investing. The premiums all compressed because the strategies became free.
- 2020s. Now what? That is the actual interesting question.
Why edges die
There are basically three killers, and they hit every edge eventually.
- Capacity. An edge only fits so much money. As more capital chases it, the price impact erases the alpha. Renaissance closed Medallion to outside money for exactly this reason.
- Competition. Once someone publishes or productizes the edge, everyone runs it. Spreads compress. Returns flatten.
- Structural change. The market itself shifts. New regulation, new instruments, new participants. Strategies built on 2018 assumptions stop working in 2024 not because they are wrong but because the world they described is gone.
Why retail can't out-edge HFTs anymore
On the things HFTs care about (latency, microstructure, queue position, exchange fee tiers), retail is not in the game. You will never out-execute Citadel from a Robinhood account. That is fine. They are not in your game either.
Where retail still has edge is in horizon, instruments, and structure. HFTs have to flatten by close. You do not. HFTs cannot trade size in deep out-of-the-money options without moving the market. You can. HFTs do not have time to think about whether a stock is going to pin to a strike on Friday. You do.
Where new edge lives
The new edges look weird if you grew up on charts and earnings.
- Positioning awareness. Knowing where dealers, vol funds, and pensions are forced to act. This is mechanical edge. Not predictive. Just reading the calendar of forced flows.
- Regime conditioning. The same strategy can have positive expectancy in one vol regime and negative in another. Edge is not a strategy. Edge is a strategy plus the context in which it works.
- Cross-asset awareness. Equities, bonds, credit, FX, vol. When something is breaking in credit and equities have not noticed yet, that is alpha. When MOVE diverges from VIX, somebody is going to be wrong.
- Behavioral patience. The most underrated edge. Most people overtrade. Most people chase. If you can sit on your hands until a real setup shows up, that itself outperforms a lot of strategies.
The honest take
Edge has not disappeared. It has migrated. From information to speed to factors to structure. The traders who thrive in each era are the ones who notice when the previous edge is dead and stop trying to revive it.
If you are running a setup from a YouTube video filmed in 2017, it probably does not work anymore. Not because the video was a scam. Because that edge already had its run. The market moved on. So should you.