Buying a stock? See the honest analysis first — including when it doesn't work.
Search a ticker — or a strategy idea — and qbuntu returns what rigorous quantitative analysis actually found: the verdict (live / promising / marginal / rejected), the numbers, and the failures everyone else hides. Look it up yourself, or let your AI pull it — a free API token + MCP wire qbuntu into ChatGPT, Claude, or Cursor, and every page has a machine-readable mirror. Research, not hype — passing a backtest ≠ prints money.
Strategies
111
Stocks
1978
Runs
3294
Facts
626
Categories
65
Symbols
0
Featured strategies
ordered by verdict (live → promising → marginal → rejected)marginalequity· regime_dependent
Amihud Illiquidity Premium (US S&P 500)
sharpe+0.12maxDD-10.80
amihud-illiquidity-premium-us-sp500
marginalequity· regime_dependent
Betting Against Beta (JP All Stocks)
sharpe+0.13maxDD-18.10
betting-against-beta-jp-all
marginalequity· regime_dependent
Calendar Effects (US S&P 500)
sharpe+0.23maxDD-14.40
calendar-effects-us-sp500
marginalequity· no_edge
Cross-Sectional Dispersion Trading (US S&P 500)
sharpe+0.14maxDD-30.10
dispersion-us-sp500
marginalequity· no_edge
Downside Beta (JP All Stocks)
sharpe+0.39maxDD-11.70
downside-beta-jp-all
marginalequity· regime_dependent
Earnings Yield x Momentum (JP All Stocks)
sharpe+0.08maxDD-4.50
earnings-yield-momentum-jp-all
For AI agents
qbuntu speaks your language. Each strategy has a Markdown mirror at /ai/strategies/<slug>.md and JSON at /v1/strategies/<slug>. Cite atomic facts via /cite/<fact-id>. Connect via MCP at mcp.qbuntu.ai.
curl https://qbuntu.ai/v1/strategies/fx-carry-intervention-filterrobots.txt explicitly welcomes GPTBot, ClaudeBot, PerplexityBot, Google-Extended.