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Update to LONA™

Snapshot Nov 10, 2026 · 18:08 UTC · version 3.0.2

WHAT CHANGED

Product listing or positioning changed

Full description — Now says: Create, backtest, optimize and walk-forward test trading strategies with LONA™. Describe your logic in plain language, or bring your own Python code. Read,...

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Full description

Before

Oct 27, 2026 · 00:09 UTC

LONA™ is a trading strategy validation framework for AI agents. Describe a strategy idea and your agent writes it in Python and backtests it on historical market data, all inside ChatGPT. Go beyond a single lucky backtest: optimize strat...

After

Nov 10, 2026 · 18:08 UTC

Create, backtest, optimize and walk-forward test trading strategies with LONA™. Describe your logic in plain language, or bring your own Python code. Read, edit and version your strategies. STRATEGIES • Turn ideas into Python strategies ...

Long description

Before

Oct 27, 2026 · 00:09 UTC

LONA™ is a trading strategy validation framework for AI agents. Describe a strategy idea and your agent writes it in Python and backtests it on historical market data, all inside ChatGPT. Go beyond a single lucky backtest: optimize strat...

After

Nov 10, 2026 · 18:08 UTC

Create, backtest, optimize and walk-forward test trading strategies with LONA™. Describe your logic in plain language, or bring your own Python code. Read, edit and version your strategies. STRATEGIES • Turn ideas into Python strategies ...

Composer icon dark url

Before

Oct 27, 2026 · 00:09 UTC

https://files.openai.com/content?id=file_0000000028f4821185379f30a9a4cf10

After

Nov 10, 2026 · 18:08 UTC

https://files.openai.com/content?id=file_000000006d6481f49d6944971d901217

Composer icon url

Before

Oct 27, 2026 · 00:09 UTC

https://files.openai.com/content?id=file_000000000b9881f48abcf533f8ee848b

After

Nov 10, 2026 · 18:08 UTC

https://files.openai.com/content?id=file_000000005e2c81f4acd3334f039e1623

Compare saved observations

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Full technical diff · 8 changed fields

changed /release/description

BEFORE
"LONA™ is a trading strategy validation framework for AI agents. Describe a strategy idea and your agent writes it in Python and backtests it on historical market data, all inside ChatGPT.\n\nGo beyond a single lucky backtest: optimize strategy parameters across every combination in a grid and see whether performance holds up. Review interactive reports with price candles, equity and drawdown curves, per-symbol statistics and the full trade log.\n\nLONA™ runs historical simulations only. It does not place live trades or connect to brokerage accounts, and nothing it shows is investment advice."
AFTER
"Create, backtest, optimize and walk-forward test trading strategies with LONA™. Describe your logic in plain language, or bring your own Python code. Read, edit and version your strategies.\n\nSTRATEGIES\n• Turn ideas into Python strategies with immutable versioning.\n• Create and maintain your own strategy code.\n\nMARKET DATA\n• US and China stocks and ETFs, crypto, forex and mutual funds, with daily and intraday data where available.\n• Split- and dividend-adjusted equity data.\n• Use LONA™ datasets or upload your own OHLCV CSV.\n\nBACKTESTING\n• Interactive candlestick charts, equity and drawdown curves, per-symbol statistics and a full trade log.\n• Buy & Hold and benchmark comparisons.\n\nOPTIMIZATION\n• Sweep parameter grids and compare combinations by performance metric.\n• Day-of-Week and Time-of-Day tests block new entries on a selected weekday or UTC time slot; existing positions can still exit.\n• Explore results with interactive 2D and 3D charts.\n\nWALK-FORWARD ANALYSIS\n• Test optimized parameters on historical data not used during optimization to help assess robustness and detect overfitting.\n• Rolling and anchored windows: optimize in-sample, then test out-of-sample.\n• Review stitched out-of-sample equity and drawdown, window schedules, efficiency ratios and the share of profitable windows.\n\nMETRICS\nRealized P&L, total return, CAGR, annualized Sharpe ratio, maximum drawdown, return volatility, Calmar ratio, recovery factor, profit factor, payoff ratio, expectancy, average trade, win rate and average bars held.\n\nHistorical simulations only. LONA™ does not place live trades or connect to brokerage accounts. Nothing it shows is investment advice."

changed /release/id

BEFORE
"pluginrel_e61acb3c62b881918ca00b924d775f35"
AFTER
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changed /release/interface/composer_icon_dark_url

BEFORE
"https://files.openai.com/content?id=file_0000000028f4821185379f30a9a4cf10"
AFTER
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changed /release/interface/composer_icon_url

BEFORE
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AFTER
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changed /release/interface/logo_url

BEFORE
"https://files.openai.com/content?id=file_000000007db0820cb5363f62de22404e"
AFTER
"https://files.openai.com/content?id=file_00000000f548820a9c4a1c0d84075bfa"

changed /release/interface/logo_url_dark

BEFORE
"https://files.openai.com/content?id=file_00000000d3c081fa9e021b9ea963ea61"
AFTER
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changed /release/interface/long_description

BEFORE
"LONA™ is a trading strategy validation framework for AI agents. Describe a strategy idea and your agent writes it in Python and backtests it on historical market data, all inside ChatGPT.\n\nGo beyond a single lucky backtest: optimize strategy parameters across every combination in a grid and see whether performance holds up. Review interactive reports with price candles, equity and drawdown curves, per-symbol statistics and the full trade log.\n\nLONA™ runs historical simulations only. It does not place live trades or connect to brokerage accounts, and nothing it shows is investment advice."
AFTER
"Create, backtest, optimize and walk-forward test trading strategies with LONA™. Describe your logic in plain language, or bring your own Python code. Read, edit and version your strategies.\n\nSTRATEGIES\n• Turn ideas into Python strategies with immutable versioning.\n• Create and maintain your own strategy code.\n\nMARKET DATA\n• US and China stocks and ETFs, crypto, forex and mutual funds, with daily and intraday data where available.\n• Split- and dividend-adjusted equity data.\n• Use LONA™ datasets or upload your own OHLCV CSV.\n\nBACKTESTING\n• Interactive candlestick charts, equity and drawdown curves, per-symbol statistics and a full trade log.\n• Buy & Hold and benchmark comparisons.\n\nOPTIMIZATION\n• Sweep parameter grids and compare combinations by performance metric.\n• Day-of-Week and Time-of-Day tests block new entries on a selected weekday or UTC time slot; existing positions can still exit.\n• Explore results with interactive 2D and 3D charts.\n\nWALK-FORWARD ANALYSIS\n• Test optimized parameters on historical data not used during optimization to help assess robustness and detect overfitting.\n• Rolling and anchored windows: optimize in-sample, then test out-of-sample.\n• Review stitched out-of-sample equity and drawdown, window schedules, efficiency ratios and the share of profitable windows.\n\nMETRICS\nRealized P&L, total return, CAGR, annualized Sharpe ratio, maximum drawdown, return volatility, Calmar ratio, recovery factor, profit factor, payoff ratio, expectancy, average trade, win rate and average bars held.\n\nHistorical simulations only. LONA™ does not place live trades or connect to brokerage accounts. Nothing it shows is investment advice."

changed /release/version

BEFORE
"3.0.1"
AFTER
"3.0.2"
Full snapshot data
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