How much do SPYM and VOO overlap?

SPYM and VOO overlap by about 100% of portfolio weight, sharing 501 holdings (per each fund's latest SEC N-PORT filing, weights rolled forward to today).

Which is bigger: SPYM vs VOO?

VOO is the largest at $988.5B in assets.

Is ChartRow affiliated with any of these funds?

No. ChartRow is independent and not affiliated with, sponsored by, or endorsed by State Street, Vanguard. Comparisons are derived independently from public SEC filings and market data; not investment advice.

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SPYM vs VOO (2026)

SPYM

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VOO

▼

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SPDR Portfolio S&P 500 ETF and Vanguard S&P 500 ETF side by side. SPYM is the cheaper fund (0.02% vs 0.03% expense ratio). Over the last five years SPYM returned more (+73.15% vs +73.14%, total return). Their portfolios overlap by about 100% of weight. Not investment advice.

Fund facts#

Data provided bySource: Twelve Data

Returns as of market close, Nov 13, 2026. The charts run through the Nov 13 close.

	SPYM	VOO
Focus	S&P 500	S&P 500
Expense ratio	0.02%	0.03%
AUM	$153.9B	$988.5B
Distribution yield	1.03%	1.07%
Holdings	501	504
1M total	-3.0%	-3.1%
YTD total	+11.5%	+11.5%
1Y total	+13.5%	+13.5%
3Y total	+78.0%	+78.1%
5Y total	+73.1%	+73.1%
10Y total	—	+311%
3Y total CAGR	+21.2%/yr	+21.2%/yr
5Y total CAGR	+11.6%/yr	+11.6%/yr
10Y total CAGR	—	+15.2%/yr
Issuer	State Street	Vanguard
Inception	2005-11-08	2010-09-07

All returns are total returns (dividends reinvested), through the latest price during the session. CAGR = compound annual growth rate. '—' means the fund's history doesn't span the horizon.

Annualized returns (CAGR)#

Data provided bySource: Twelve Data

SPYMVOO

+13.5%+13.5%+13.6%+13.6%+21.1%+21.1%+11.6%+11.6%+15.2%+14.7%1Ysince 11/3/252Ysince 11/4/243Ysince 11/6/235Ysince 11/8/2110Ysince 11/7/1615Ysince 11/7/11

0%+5%+10%+15%+20%+25%

Compound annual growth rate per holding period, total return, from weekly adjusted closes. Horizons a fund's history can't span show no bar; horizons no fund spans are omitted.

Performance, rebased#

Data provided bySource: Twelve Data

Total return, rebased to 0% · SPYM vs VOO

−10%−5%0%+5%+10%+15%+20%2026FebMarAprMayJunJulAugSepOctNov

SPYM+11.5%VOO+11.5%

Nov 13, 2026

SPYM+11.5%

VOO+11.5%

Returns by year#

Data provided bySource: Twelve Data

Year	SPYM	VOO
2017	—	+21.8%
2018	—	-4.5%
2019	—	+31.4%
2020	—	+18.3%
2021	+28.8%	+28.8%
2022	-18.1%	-18.2%
2023	+26.2%	+26.3%
2024	+25.0%	+25.0%
2025	+17.8%	+17.8%
2026 YTD	+11.5%	+11.5%

Total returns (dividends reinvested), calendar years.

Returns by year, charted#

SPYMVOO

+21.8%-4.5%+31.4%+18.3%+28.8%+28.8%-18.1%-18.2%+26.2%+26.3%+25.0%+25.0%+17.8%+17.8%+11.5%+11.5%2017201820192020202120222023202420252026 YTD

−20%−10%0%+10%+20%+30%+40%

Holdings overlap#

SPYM and VOO overlap by about 100% of portfolio weight — 501 shared holdings out of 501 in SPYM and 504 in VOO, from each fund's latest SEC filing (Jun 30, 2026 / Jun 30, 2026).

Only in SPYM

None — every SPYM holding is also in the other fund.

Only in VOO

Vanguard Cmt Funds-Vanguard Market Liquidity Fund (0.3%), Hologic Inc (0.0%), ABIOMED Inc (0.0%)

Top 10 holdings, side by side#

SPYMVOO

8.1%8.0%6.1%6.1%6.0%6.0%4.8%4.8%4.0%4.0%2.5%2.5%2.2%2.2%1.7%1.7%1.7%1.7%1.7%1.7%AAPLNVDAMSFTGOOGLAMZNAVGOMETALLYTSLABRK-B

0%2%4%6%8%10%

Merged top 10 across the funds — each column is the holding's % of that fund.

Sector weights#

Sector	SPYM	VOO
Technology	35.7%	35.6%
Financials	12.7%	12.5%
Healthcare	10.4%	10.4%
Consumer Discretionary	9.6%	9.6%
Communication Services	8.9%	8.9%
Industrials	8.1%	8.1%
Consumer Staples	5.0%	5.0%
Energy	3.6%	3.6%
Utilities	2.1%	2.1%
Materials	1.8%	1.8%
Real Estate	1.8%	1.8%
Not on ChartRow	0.3%	0.6%

Sector weights, charted#

SPYMVOO

35.7%35.6%12.7%12.5%10.4%10.4%9.6%9.6%8.9%8.9%8.1%8.1%5.0%5.0%3.6%3.6%2.1%2.1%1.8%1.8%1.8%1.8%0.3%0.6%TechnologyFinancialsHealthcareConsumer Discretion…Communication Servi…IndustrialsConsumer StaplesEnergyUtilitiesMaterialsReal EstateNot on ChartRow

0%10%20%30%40%

Estimated portfolio characteristics#

Data provided bySource: Twelve Data

	SPYM	VOO
P/E (trailing)	—	—
P/B	5.0	5.0
Dividend yield	1.11%	1.10%
Earnings growth (TTM)	+34.8%	+34.8%

Weighted by each fund's filed holdings, over the members we track. Shown only when every fund's tracked coverage is high enough for the average to mean something.

Growth from any starting date#

Data provided bySource: Twelve Data

Hover to move the starting point — every fund rebases to 1× at that date, so the comparison holds from any entry point back to 2020 (the earliest date all 2 funds existed). Log scale, weekly total returns.

0.25×0.5×1×2×4×rebased: Jan 2020

SPYM2.5×VOO2.5×

Rebase at

Hover anywhere to rebase every line to 1× at that date and compare growth from that point — or pick a year above, which is the same thing with an address. Log scale.

Fund flows#

Period	SPYM	VOO
Jun 2026	+$7.7B	−$8.5B
May 2026	+$3.2B	+$15.8B
Apr 2026	+$7B	+$28.5B
Mar 2026	—	−$11.1B
Feb 2026	—	+$14.5B
Jan 2026	—	+$13.3B

Net creations minus redemptions, derived from consecutive SEC N-PORT filings. The form only exists since mid-2019.

Fund flows, charted#

SPYMVOO

+$4.1B+$11.5B+$44.4B+$56.8B+$50.3B+$130.4B−$92.3B+$17.9B+$52.5B20192020202120222023202420252026 YTD

−$100B−$50B$0$50B$100B$150B

Methodology#

Returns are total returns (dividends reinvested) from daily adjusted closes. Holdings, overlap, sector weights and flows derive from each fund's public SEC filings (Form N-PORT), anchored on the latest filing and rolled forward daily by price moves. Overlap is the sum of the smaller weight across shared holdings. See each fund's full holdings: SPYM holdings · VOO holdings. Past performance does not predict future returns; not investment advice.

FAQ#

SPYM or VOO — which is better?: SPYM is the cheaper fund (0.02% vs 0.03% expense ratio). Over the last five years SPYM returned more (+73.15% vs +73.14%, total return). Their portfolios overlap by about 100% of weight. Two low-cost S&P 500 ETFs — State Street's SPYM (formerly SPLG) vs Vanguard's VOO.
How much do SPYM and VOO overlap?: SPYM and VOO overlap by about 100% of portfolio weight, sharing 501 holdings (per each fund's latest SEC N-PORT filing, weights rolled forward to today).
Which is bigger: SPYM vs VOO?: VOO is the largest at $988.5B in assets.
Is ChartRow affiliated with any of these funds?: No. ChartRow is independent and not affiliated with, sponsored by, or endorsed by State Street, Vanguard. Comparisons are derived independently from public SEC filings and market data; not investment advice.