Options tool

SPY ⇌ SPX Converter

Convert price references and level lists with the real SPX ÷ SPY ratio from the latest official closes, not the rough 10× shortcut. Useful for orientation, not a replacement for live quotes.

Dated close ratio · Not live data

Convert a reference

The calculator uses the SPX ÷ SPY ratio from the latest official closes. Edit either input to update the other.

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Separate levels with spaces, line breaks or semicolons. 6,000 is read as one number. Up to 200 levels.

Approximate SPX levels

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Converted at the ratio shown above, from official closes, not live quotes. For exact levels, compare current SPY and SPX quotes.

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Educational tool. Converted levels use a dated closing-price ratio, an estimate rather than live market data, and nothing here is a recommendation to buy or sell any security.

A fast translation

Same market reference, different instrument

SPX is the S&P 500 Index. SPY is an exchange-traded fund designed to track it at about one-tenth of the index level, which is why the mental shortcut SPX ≈ 10 × SPY exists. The real ratio sits a little above 10 (about 10.03 at the October 2026 closes) and drifts higher as SPY’s dividends accrue, so this page converts with the ratio from the latest official closes, shown with its date, instead of the shortcut.

That matters when commentary, charts, or a level list is written in SPY while the options plan is in SPX: at SPX 7,800 the 10× shortcut is about 26 points off. Treat any conversion as an estimate. Intraday the ratio moves very little, but the gap is real and it can matter near a precise strike or level.

Worked conversion

At a ratio of 10.03, a SPY level of 600.00 converts to roughly 6,018.00 SPX, not 6,000. A list of 595, 600, 605 becomes roughly 5,967.85, 6,018, 6,068.15.

Why it works

Why the ratio is near 10

SPY was built to track the S&P 500 at about one-tenth of the index level, which is why SPX ≈ 10 × SPY works as mental math. The actual ratio is a little above 10 and rises slowly as SPY accrues dividends between ex-dates, then steps back on each ex-date. It is not an official peg and it does not promise an exact match.

When the conversion breaks down

SPY is an ETF that holds shares and pays dividends. SPX is an index calculation. Dividend ex-dates, fund fees, quote timing, and the difference between end-of-day ETF net asset value and the index can all create drift. This page uses the ratio from the latest official closes, dated, so intraday the error is usually small, but it is enough to make a converted level unsuitable for exact execution.

Why SPX traders convert SPY levels

A lot of chart commentary and liquidity discussion is framed in SPY because the ETF is widely watched. Traders using SPX options may translate those references to keep one price map. SPX options are cash-settled and European-style, so there is no early assignment. They are also commonly associated with Section 1256 tax treatment; that is a tax topic to verify for your own situation, not a trading reason by itself.

For related context, read the SPX trading strategy framework, estimate the day’s range with the expected move calculator, move levels to futures with the SPX to ES converter, see how dealer positioning shapes the levels in the GEX guide, or review Alpha Pod’s workflow on the get started page.

Keep reading

Options tool

Expected move calculator

Estimate the day’s implied range from the straddle, then read converted levels against it.

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Academy

SPX trading strategy

The 0DTE framework the desk runs every session: the 8 EMA trigger, levels, the VIX filter and sizing.

Read the framework

Academy

GEX guide

How gamma exposure decides whether SPX ranges or trends, and the key levels to convert first.

Read the GEX guide

FAQ

SPY and SPX conversion questions

A little above 10: about 10.03 in October 2026, and it drifts upward slowly as SPY dividends accrue. SPX approximately equals 10 times SPY is a mental shortcut, not a fixed conversion; this page converts with the SPX divided by SPY ratio from the latest official closes, shown with its date.

SPY holds the index constituents and distributes dividends, while SPX is an index calculation. Dividend timing, ETF fees, quote timing, and end-of-day NAV mechanics create small but real differences.

Yes. Multiply by the current SPX to SPY ratio from the latest closes (about 10.03, not exactly 10), then check live SPX quotes before treating a level as exact. A 600 SPY reference becomes about 6,018 SPX at that ratio, not 6,000.

SPX options are cash-settled and European-style, so they cannot be exercised early. SPX options are commonly discussed in connection with Section 1256 tax treatment; tax treatment depends on individual facts, so confirm details with a qualified tax professional.

No. It uses the official closing prices of SPX and SPY from the latest session, refreshed after each close and shown with their date, and you can enter your own ratio. Intraday the ratio moves very little. For exact work, compare current SPY and SPX quotes from your broker or market-data source.

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