position sizing

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The Odyssey
2026-08-14 15:55:08

Five Trading Lessons From The Odyssey: Strategy, Discipline and Risk Control

A MarsBit analysis uses Homer’s Odyssey to frame five practical lessons for traders: strategy beats brute force, self-control works better when rules are set in advance, survivable losses matter more than perfect outcomes, strategies must adapt when market conditions shift, and long-term performance says more than any single trade. The piece argues that traders cannot control the market any more than Odysseus could control the sea, the gods or his crew. What they can control is position sizing, entry and exit rules, stop-loss discipline and how they respond when a thesis breaks down. The article links several episodes from the epic to trading behavior. Odysseus’s escape from the Cyclops is presented as a model for preplanned execution rather than raw conviction. His decision to be tied to the mast before hearing the Sirens becomes an example of commitment mechanisms, including preset TP/SL levels and defined loss limits. The choice between Scylla and Charybdis is used to explain why avoiding catastrophic drawdowns matters more than chasing ideal outcomes. MarsBit also cites a Journal of Finance study on 66,465 brokerage accounts and a BIS study on crypto trading behavior after the Terra and FTX collapses, arguing that overtrading and emotion-driven decisions often damage results. In the end, the report says a trading system is judged over a long sample, not by one winning screenshot.

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Five Trading Lessons From The Odyssey: Strategy, Discipline and Risk Control
South Korea s
2026-07-25 11:55:59

NDV on Korea’s near-9% weekly slide: position sizing and leverage matter as much as the thesis

Jason of NextGen Digital Venture used the latest sell-off in South Korea’s equity market to argue that getting the long-term theme right is not enough if price, time horizon, leverage, and position size are ignored. From July 10 to July 16, 2026, the Korea Composite Stock Price Index fell 8.77%, while the Philadelphia Semiconductor Index dropped 9.97% from July 10 to July 17. In the article, Jason says the pullback does not prove the artificial intelligence story is over, but it does force investors to revisit what happens when crowded positioning and leverage meet a sudden change in conditions. He points to market concentration as one pressure point. As of July 15, 2026, Samsung Electronics and SK Hynix made up 52% of the KOSPI by market capitalization, up from 34% at the end of 2025. He also cites disclosures from South Korea’s Financial Services Commission showing that market value in single-stock-linked leveraged products rose from KRW 4.4 trillion on May 27 to KRW 11.9 trillion on July 15. Jason does not claim that leverage liquidations explain every sell order, noting that the Bank of Korea raised rates on July 16 and that oil prices, geopolitical risks, and AI stock valuations were all shifting at the same time. His argument is narrower: when index concentration is high and leverage tied to a few names expands quickly, the market structure itself can amplify the first wave of selling.

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NDV on Korea’s near-9% weekly slide: position sizing and leverage matter as much as the thesis