There Are Two SPY ETFs Now, and You Probably Own the Wrong One
SPYM tracks the same S&P 500 as SPY at 2 basis points versus 9, making it nearly five times cheaper for retirement savers.
SPY's premium fee funds the deepest ETF options market on earth, a feature that is essential for active traders but worthless to anyone holding inside a retirement account.
VOO and IVV match SPYM's rock-bottom fee structure, giving buy-and-hold investors three strong alternatives to SPY's costlier, liquidity-focused wrapper.
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State Street SPDR Portfolio S&P 500 ETF (NYSEARCA:SPYM) did not exist under that ticker a year ago. It was SPLG until State Street renamed it on October 31, 2025. Same index, same holdings, same two-basis-point fee.
State Street has spent the past year positioning its lineup for retirement plan money, and the new ticker deliberately echoes the most famous ETF in the world, the SPDR S&P 500 ETF Trust (NYSEARCA:SPY).
Both funds track the same S&P 500 index. One charges 9.45 basis points and the other charges 2. If you hold SPY in a retirement account and never trade it, you are paying roughly 5 times as much for identical exposure.
SPY's higher fee earns its keep for certain buyers. It pays for the deepest liquidity and options market of any ETF on the planet, features that matter enormously to traders and almost nothing to a saver dollar-cost-averaging into a 401(k).
SPY was launched in 1993 as a unit investment trust, an older legal structure that requires holding every index component in fixed proportion and paying dividends in cash on a set schedule. The UIT wrapper cannot lend securities or reinvest dividends immediately, and those limits show up in the fee.
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SPYM sits inside a modern open-end fund structure. It can lend securities, reinvest cash faster, and operate on a leaner administrative base. State Street can price it at 2 basis points and still run it profitably.
Both funds hold the S&P 500 in identical weights. Any tracking difference comes from the fee gap and how each wrapper handles internal cash.
SPYM is finally large enough and liquid enough for ordinary retirement money to use without friction. The rename signals that State Street thinks the moment has arrived to compete for retirement dollars head-on.
Two basis points against 9.45 sounds like a rounding error until you attach it to a real portfolio and time horizon. The ratio, roughly five to one, applies to every dollar every year and never shrinks.
For a trader turning positions over in a week, that fee difference is invisible. For a retirement saver holding for three decades, the expense ratio becomes the single biggest controllable variable in the whole investment.
State Street's push into retirement-plan money matters goes beyond one rebrand. Millions of first-time investors are about to meet an S&P 500 fund at a fee close to the lowest legally permissible, under a ticker that looks almost identical to the fund their parents already know.
SPY still earns its fee for anyone who uses what that fee buys. Its options market is the deepest of any ETF on earth, spreads are a fraction of a penny, and institutions can move nine-figure positions without disturbing the price. Traders and anyone running options overlays get real value from what SPY's fee buys.
Everyone else is paying for a service they will never touch. If your S&P 500 exposure lives inside a 401(k), an IRA, or a taxable brokerage account you rarely open, the extra basis points are buying nothing you use.
SPYM sells the same index at nearly the cheapest fee on the market. The obvious peers are Vanguard S&P 500 ETF (NYSEARCA:VOO) and iShares Core S&P 500 ETF (NYSEARCA:IVV), both priced at a similarly low fee, and any of the three works for a buy-and-hold account.
The practical move is to look at what you actually own. If the answer is SPY inside a retirement account, swapping into SPYM gives you identical exposure at a fraction of the annual cost, and the only thing you surrender is a liquidity feature the account was never going to use.
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