Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWB vs SPLG: how they differ
IWB and SPLG are both equity index funds, and over the year SPLG returned more, +17.6% against +16.7%.
iShares Russell 1000 ETF and S&P 500, book from IVV.
| IWB iShares Russell 1000 ETF | SPLG S&P 500, book from IVV | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | S&P |
| What it is | Russell 1000 | S&P 500, book from IVV |
| Total return, 1 year | +16.7% | +17.6% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.8 pts | +0.1 pts |
| Expense ratio | 0.15% | not published |
| Holdings | 1024 | not filed |
IWB in plain words
IWB is an index equity fund tracking the Russell 1000. Over the year to Sep 11, 2026 it returned +16.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year. By its holdings filed for Jun 30, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1024 positions, with the top ten at 33.5%.
SPLG in plain words
SPLG is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100.
Questions people ask
- Which returned more over the last year, IWB or SPLG?
- In the year to Sep 12, 2026, with distributions reinvested, IWB returned +16.7% and SPLG returned +17.6%, so SPLG returned more. One year is one year; the longer windows are in the table.
Other comparisons
Where to next
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IWB against SPLG, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWB-SPLG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources