I bought 65 x 10y € swap contracts on the European ICE early mornings, must have been 2011/2012. Being tired and half-awke, I just saw the market was open and entered my order. What I didn't see was the bid/ask was 200 bps wide in pre-market. So I overpaid 100 bps on 65 contracts = down €65k. I remember talking a walk with the dog just to get some much-needed air in after that Luckily I was able to convince the broker to bust the trade an hour later. Whoever was on the other end was probably pissed.
EMLX when fake report was faxed to CNBC..year 2000. I bought it right before it stopped trading near the bottom. One of mi biggest days ever. Guy next to me made $400k on that trade.
We went on to trade in an office in South Beach. Redwood then Orion trading. Last I heard he was buying secondary offerings with Shy and huge DVP account.
Trading with indicators and fancy tools Not fully understanding and implementing risk/reward Not understanding position sizing Not having a trading plan Gambling instead of trading Allowing emotions to cloud judgment/giving into emotions Not having patience Not trading higher time frames Over-trading/being too involved Not taking profits