S&P 500 7,489.72 +0.70% NASDAQ 25,373.85 +1.00% DOW 52,485.03 +0.50% RUT 2,604.40 -0.34% BTC-USD 63,514.00 +0.80% ETH-USD 3,412.60 -0.65% 10-YR 4.12 -0.72% 2-YR 3.86 +0.52% VIX 14.92 -2.67% GOLD 3,288.40 +0.43% WTI 71.86 -1.26% NATGAS 3.14 +1.95% NVDA 188.34 +1.90% MSFT 512.60 -0.28% AAPL 231.09 +0.46% AMZN 228.77 +1.16% GOOGL 196.42 -0.45% META 704.15 +1.41% TSLA 297.50 -2.11% AMD 172.88 +2.38%

S&P 500 7,489.72 +0.70% NASDAQ 25,373.85 +1.00% DOW 52,485.03 +0.50% RUT 2,604.40 -0.34% BTC-USD 63,514.00 +0.80% ETH-USD 3,412.60 -0.65% 10-YR 4.12 -0.72% 2-YR 3.86 +0.52% VIX 14.92 -2.67% GOLD 3,288.40 +0.43% WTI 71.86 -1.26% NATGAS 3.14 +1.95% NVDA 188.34 +1.90% MSFT 512.60 -0.28% AAPL 231.09 +0.46% AMZN 228.77 +1.16% GOOGL 196.42 -0.45% META 704.15 +1.41% TSLA 297.50 -2.11% AMD 172.88 +2.38%

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Analysis

What we learned running the same scraper for 90 days straight

Rate limits, silent schema changes, and the three failure modes that ate the most debugging time.

Aug 3, 2026 · 7 min read · by the JMM Research desk

Draft entry. The full analysis for this piece ships with the data pipeline; the dataset it grades against is being assembled.