The Stocks That Did Nothing Proved the Strategy Today
Today, SK Hynix, LG Chem, and Samsung SDI all fired signals — but none were bought. The deviation filter stopped them.
SK Hynix was 16.9% above MA20, LG Chem 7.2%, Samsung SDI 9.4%. All three had spiked to extended highs on US-China tariff news, and the 5% cap caught every one of them.
At First, I Thought It Might Be Too Conservative
When I added the MA20 5% deviation cap, there was a nagging thought: “isn’t this going to cut off too many entry opportunities?” Today’s result changed that.
The goal was to prevent chasing highs. It actually did that. The strategy worked as intended.
Kakao passed the filter and was bought. It ended the day at −0.41%. But that’s not a mistake. The system selected a stock that met the criteria — the verdict comes from tomorrow onward, not today’s close.
The Trailing Stop Didn’t Fire Yet
Samsung Electronics didn’t reach the activation threshold of ₩211,380. Today’s high was ₩209,750 — ₩1,630 short.
No practical difference from the old fixed +6% take-profit today. Trailing stops earn their keep in strong trending stocks. In today’s range-bound session, it’s closer to an insurance policy. The strategy’s real difference only shows up if there’s further upside tomorrow.
Today Also Confirmed the Collaboration Model
Meta-Chulbuji (judgment) + Claude Code (execution) + copy-paste (connection). Two weekend days, 14 modifications, first live order successful.
A production-grade system that someone who can’t write code can operate.
A day the system is working well doesn’t look like much. A day like today — when wrong buys are quietly blocked — is exactly what that looks like.
What to watch next: Whether Samsung Electronics crosses ₩211,380. Whether trailing stop produces genuinely different results than the fixed +6% exit.
Reader question: When operating an automated trading system, how do you evaluate a day where “nothing happened”?