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ETF comparison

ITOT vs SPMD

US Total Market vs US Mid Cap.

iShares Core S&P Total U.S. Stock Market ETF · State Street SPDR Portfolio S&P 400 Mid Cap ETF

Holdings overlap

Weighted by ISIN/CUSIP
5.0 %

400 positions appear in both funds. Buying equal dollars of ITOT and SPMD would leave roughly 5.0% of each dollar exposed to the same underlying securities.

ITOT unmatched 94.8% Shared 5.0% SPMD unmatched 94.8%

Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.

In ITOT only
2,098 positions
Shared
400 positions
In SPMD only
0 positions

Side by side

ITOT

iShares Core S&P Total U.S. Stock Market ETF

iShares · US Total Market

92 composite / 100
Expense ratio
0.030%
Net assets
$95.86B
TTM yield
1.02%
Top-10 conc.
32.1%
SPMD

State Street SPDR Portfolio S&P 400 Mid Cap ETF

State Street · US Mid Cap

96 composite / 100
Expense ratio
0.030%
Net assets
$17.95B
TTM yield
1.32%
Top-10 conc.
7.7%

Sub-score comparison

97
Cost
97
88
Tax efficiency
88
100
Liquidity
100
68
Concentration
100
—
Tracking quality
—
ITOT sub-score SPMD

Tracking quality isn't part of the composite — see what we don't score for why.

Cost difference

Expense ratios are effectively identical (0.030% vs 0.030%).

Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with ITOT vs SPMD.

Top shared holdings

400 shared in total
# Holding In ITOT In SPMD Overlap
1 Twilio, Inc. 0.04% 0.86% 0.04%
2 Carpenter Technology Corp. 0.04% 0.84% 0.04%
3 MKS, Inc. 0.04% 0.83% 0.04%
4 Curtiss-Wright Corp. 0.04% 0.77% 0.04%
5 Entegris, Inc. 0.04% 0.76% 0.04%
6 nVent Electric plc 0.04% 0.76% 0.04%
7 ATI, Inc. 0.04% 0.74% 0.04%
8 Illumina, Inc. 0.04% 0.73% 0.04%
9 TechnipFMC plc 0.04% 0.73% 0.04%
10 MasTec, Inc. 0.04% 0.71% 0.04%
11 Sterling Infrastructure, Inc. 0.04% 0.71% 0.04%
12 Woodward, Inc. 0.03% 0.70% 0.03%

Only in ITOT

2,098 total
  • NVIDIA Corp. 6.63%
  • Apple, Inc. 5.81%
  • Microsoft Corp. 3.79%
  • Amazon.com, Inc. 3.19%
  • Alphabet, Inc. 2.86%
  • Broadcom, Inc. 2.45%
  • Alphabet, Inc. 2.29%
  • Micron Technology, Inc. 1.78%
  • Meta Platforms, Inc. 1.69%
  • Tesla, Inc. 1.62%

Only in SPMD

0 total

Every SPMD position is also held by ITOT.

Percentages are holdings overlap with the named fund.

Open ITOT or SPMD at a brokerage

Both funds trade commission-free at major US brokerages.

Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.

Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see /methodology/.

Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.