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Curated developer articles, tutorials, and guides โ auto-updated hourly
็ไผ2d ago โข 7 min read
The One-Line Fix That Took My t-Stat From 6.22 to 1.04
A breakout strategy passed all six parameter cells. It was a fill assumption, not an edge. I had...
#trading#backtesting#python#quant
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Christian Pichichero6d ago โข 7 min read
SEC EDGAR Companyfacts API Tutorial
The SEC EDGAR APIs provide public filing data. For developers building US equity research pipelines,...
#quant#python#finance#datascience
1 1
Christian Pichichero2d ago โข 8 min read
How to Backtest Value Investing Without Lookahead Bias
A value backtest can be mathematically correct and still use information that investors did not have...
#quant#python#finance#datascience
0 1
!["[261017] 60์ผ ์๋ ์คํ ์ข
๋ฃ โ ์ฌ์ ๋ฑ๋กํ ๊ธฐ์ค๋๋ก ์ ์๋ค"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F5vkp1zlrf7umhyyq70f4.png)
finaltype2d ago โข 1 min read
"[261017] 60์ผ ์๋ ์คํ ์ข ๋ฃ โ ์ฌ์ ๋ฑ๋กํ ๊ธฐ์ค๋๋ก ์ ์๋ค"
ํต๊ณ์ ์ผ๋ก ๊ธฐ์ค์ ๋ชป ๋๊ธด ์คํ์ ๋ฏธ๋ฆฌ ์ ํด๋ ๊ท์น๋๋ก ์ข ๋ฃํ๊ณ , ๋ฐ์ดํฐ ์ ์ ๊ณผ ์ง๋ ์ฅ์ ์ฌ๋ฐ๋ฐฉ์ง๋ ๋ง๋ฌด๋ฆฌํ์ต๋๋ค. 60์ผ ๋๋ฆฌ๋ ์คํ์ ์ฌ์ ๋ฑ๋กํ ๊ท์น๋๋ก.....
#quant#trading#devlog
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!["[261021] ์๋๋งค๋งค ์ฑ๊ณผ ์ฌ์ ๊ฒ - ์ง์ ๋๋น ๋์ ํ ํ์ ๊ณผ ๋ ๋ฒ๋ ๊ตฌ์กฐ ์ค๊ณ"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fynvcdg2aqej33u39hkni.png)
finaltype2d ago โข 1 min read
"[261021] ์๋๋งค๋งค ์ฑ๊ณผ ์ฌ์ ๊ฒ - ์ง์ ๋๋น ๋์ ํ ํ์ ๊ณผ ๋ ๋ฒ๋ ๊ตฌ์กฐ ์ค๊ณ"
์ง์๋ณด๋ค ๋ชปํ๋ฉด ๊ทธ๋ง๋ ์ด์ ๊ฐ ์๋ค๋ ์ง๋ฌธ์ AI ์๋ฌธ์๊ฒ ๋์ ธ ํ์ ์ ๋ฐ๊ณ , ์ด์ด์ ์ค์ ๋ก ๋น์ฉ์ ๋์ด์๋ ๊ตฌ์กฐ ์ค๊ณ์๊น์ง ๋ฐ์์ต๋๋ค. ์ง์๋ณด๋ค ๋ชปํ ๊ฑฐ ์๋๋...
#quant#trading#devlog
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!["[261022] ์กฐ๊ธฐ ์ง์
์ค๊ฑฐ๋ ์ฒซ๋ , ํต-์กํฐ๋ธ ๊ตฌ์กฐ๋ ์ฌ์ ๋ฌธ์ ๋ก ๋ณด๋ฅ"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fvwxsr0giy0dzakiowzrp.png)
finaltype1d ago โข 1 min read
"[261022] ์กฐ๊ธฐ ์ง์ ์ค๊ฑฐ๋ ์ฒซ๋ , ํต-์กํฐ๋ธ ๊ตฌ์กฐ๋ ์ฌ์ ๋ฌธ์ ๋ก ๋ณด๋ฅ"
๋ญํน์ ๋ฏธ๋ฆฌ ์ผ๋ ค ์ฒซ ๋ผ์ด๋๋ฅผ ๋น๊ธฐ๋ ์กฐ๊ธฐ ์ง์ ์ด ์ค๊ฑฐ๋์ ๋ค์ด๊ฐ๊ณ , ์ด์ ์ ์๋ฐ์ ๋ ์ธต ๊ตฌ์กฐ๋ ํฌ์ ์ฌ์์ด ์์ด ๋ณด๋ฅ๋์ต๋๋ค. ์กฐ๊ธฐ ์ง์ ์ด ์ค๊ฑฐ๋์...
#quant#trading#devlog
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finaltype2d ago โข 5 min read
A Manual Run Misclassified as a Scheduled Run - systemd Activation Metadata Outlived My Assumptions
A bug I thought I'd fixed a month earlier came back with a completely different root cause This is....
#softwarequality#postmortem#debugging#quant
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!["[261019] ์ฆ๊ถ์ฌ ๊ฒฝ๋ก ๋จ์ผํ - ๋ชจ์ ๊ณ์ข ๋น๊ต ์์คํ
์ ์๋ก ๊ฐ์๋ผ์ ๋ค"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F7t8fkhwxx1jmuhzfjzh5.png)
finaltype2d ago โข 1 min read
"[261019] ์ฆ๊ถ์ฌ ๊ฒฝ๋ก ๋จ์ผํ - ๋ชจ์ ๊ณ์ข ๋น๊ต ์์คํ ์ ์๋ก ๊ฐ์๋ผ์ ๋ค"
์ค๋ ์ฐ๋ ๋ชจ์ ๋น๊ต ํธ๋์ ์ ๊ณ ์ ์๋ฎฌ๋ ์ด์ ๋ธ๋ก์ปค๋ก ํ๋ฃจ ๋ง์ ๊ฐ์ํ๊ณ , ๋๋๋ฆฌ๊ธฐ ๊ฒฝ๋ก๋ ๋จ๊ฒจ๋์ต๋๋ค. ์ฆ๊ถ์ฌ ๊ฒฝ๋ก๋ฅผ ํ๋๋ก ์ขํ๋ค ๊ทธ๋์ ๋ฉ์ธ ์ฆ๊ถ์ฌ....
#quant#trading#devlog
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!["[Oct 22] First Live Day of Early Entry, and a Two-Tier Structure Stalled on Funding"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fcazaanjryrllxwdqnona.png)
finaltype1d ago โข 3 min read
"[Oct 22] First Live Day of Early Entry, and a Two-Tier Structure Stalled on Funding"
Early entry โ freezing the ranking ahead of time and pulling the first trading round forward โ went....
#quant#trading#devlog
0 0
finaltype2d ago โข 1 min read
์๋ ์คํ์ด ์์ฝ ์คํ์ผ๋ก ์คํ๋ ๋ฒ๊ทธ - systemd ํ์ฑํ ๋ฉํ๋ฐ์ดํฐ๊ฐ ์๊ฐ๋ณด๋ค ์ค๋ ๋จ์๋ค
ํ ๋ฌ ์ ์ ๊ณ ์ณค๋ค๊ณ ๋ฏฟ์ ๋ฒ๊ทธ๊ฐ, ์์ ํ ๋ค๋ฅธ ์์ธ์ผ๋ก ๋ค์ ํฐ์ก์ต๋๋ค ์ ์๋๋งค๋งค ์์คํ ์ ํ๋ฃจ ์ค ์ ํด์ง ์๊ฐ์ ์๋์ผ๋ก ๋งค๋งค ๋ผ์ด๋๋ฅผ ๋๋๋ค. ๊ทธ๋ฐ๋ฐ ์ข ์ข ์ ๊ฐ ์ง์ ...
#softwarequality#postmortem#debugging#quant
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!["[Oct 17] Ending a 60-Day Shadow Experiment, By the Rule I Set in Advance"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fgl4ryrh2mvweys6es3fo.png)
finaltype2d ago โข 3 min read
"[Oct 17] Ending a 60-Day Shadow Experiment, By the Rule I Set in Advance"
An experiment that didn't clear its pre-registered statistical bar got retired on schedule, and a...
#quant#trading#devlog
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!["[Oct 21] Rechecking Live Performance โ A Cold-Blooded Verdict Against the Index, and a Design That Actually Makes Money"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fceycv823ittflu2k6koo.png)
finaltype2d ago โข 3 min read
"[Oct 21] Rechecking Live Performance โ A Cold-Blooded Verdict Against the Index, and a Design That Actually Makes Money"
Asked an AI advisor for a hard-nosed verdict on whether live returns are beating the index, then...
#quant#trading#devlog
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!["[Oct 12-18] Experiment Bugs, a GPU Incident, and a Live-Account Buy Block โ Turning Manual Intervention into Something Monitored"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fzjns1m8ltiaynl2ut2n9.png)
finaltype2d ago โข 5 min read
"[Oct 12-18] Experiment Bugs, a GPU Incident, and a Live-Account Buy Block โ Turning Manual Intervention into Something Monitored"
Three incidents this week each got handled by hand โ then followed by work to make sure the same...
#quant#trading#devlog
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!["[Oct 19] Consolidating Broker Paths โ Swapping Out the Paper-Trading Comparison Track"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F20vochcc4gs48j8atnia.png)
finaltype2d ago โข 3 min read
"[Oct 19] Consolidating Broker Paths โ Swapping Out the Paper-Trading Comparison Track"
Retired an old paper-trading comparison track for a new simulated-broker one in a single day, while....
#quant#trading#devlog
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!["[261012~261018] ์คํ ๋ฒ๊ทธ, GPU ์ฌ๊ณ , ์ค๊ณ์ข ๋งค์ ์ฐจ๋จ โ ์ฌ๋ ๊ฐ์
์ ๊ฐ์ ๋์์ผ๋ก ๋ง๋ ํ ์ฃผ"](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fb21sg0ex1f2i5txuxqvj.png)
finaltype2d ago โข 1 min read
"[261012~261018] ์คํ ๋ฒ๊ทธ, GPU ์ฌ๊ณ , ์ค๊ณ์ข ๋งค์ ์ฐจ๋จ โ ์ฌ๋ ๊ฐ์ ์ ๊ฐ์ ๋์์ผ๋ก ๋ง๋ ํ ์ฃผ"
์ด๋ฒ ์ฃผ ํฐ์ง ์ฌ๊ณ ์ธ ๊ฑด ๋ชจ๋ ์ง์ ์์ ๋์ ๋๊ฒผ๋๋ฐ, ๊ทธ ๋ค๋ก "๊ฐ์ ๊ฐ์ ์ด ๋ค์ ์๊ธฐ๋ฉด ์๋์ผ๋ก ๊ธฐ๋กยท๊ฒฝ๋ณด๋๊ฒ" ๋ง๋๋ ์์ ์ด ๋งค๋ฒ ๋ฐ๋ผ๋ถ์์ต๋๋ค. ์ด๋ฒ ์ฃผ๋ ์ฌ๋์ด ์ง์ ...
#quant#trading#devlog
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