@wallstreetoasis: 🤯 Before electronic trading took over, traders used hand signals to buy and sell securities on crowded trading floors. Known as hand signaling or "arbing" (short for arbitrage), this system allowed traders to communicate orders instantly across a noisy room. 🏦 It was commonly used at exchanges like the Chicago Mercantile Exchange (CME) and the American Stock Exchange (AMEX). Here's how it worked: 🖐️ Palms facing OUT = Sell 🖐️ Palms facing IN = Buy ⚡ Traders would flash these signals in seconds to execute trades in the fast-paced world of open outcry trading. A fascinating look at how financial markets operated before screens and algorithms dominated trading. #wallstreet #trader #trading #stockmarket #americanstockmarket

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Tuesday 23 June 2026 14:30:07 GMT