Russell 3000 sector weights: Technology 36.5% leads the index
Technology is Russell 3000's largest sector at 36.5% of the index; the top three sectors hold 55% between them (as of market close, Oct 2, 2026). Weights are each member's index weight estimated for today (the tracking fund's last SEC filing, rolled forward on price — see the full constituents list company by company) summed by GICS sector — so this is the real mix you own in an index fund, not an equal-count tally.
The mix at a glance#
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Returns are price returns, weighted by index weight, at the 2026-10-02 close. P/E is the weighted harmonic mean; yield counts non-payers as zero.
Index weight in members outside our price universe — mostly recent additions and foreign listings. Named on the constituents page.
Breakdown by sector#
8.2% of index weight sits in members outside our price universe (listed on the constituents page) and isn't sectored here. YTD is the weight-weighted price return of the sector's members; example stocks are each sector's largest members (hover for their index weight). Explore the members of each sector in the screener.
FAQ#
- What is the biggest sector in Russell 3000?
- Technology, at about 36.5% of the index (128 companies). The top three sectors — Technology, Financials, Communication Services — together make up 55% of the index.
- How many sectors does Russell 3000 span?
- 11 of the 11 GICS sectors are currently represented among the members we track. Every member belongs to exactly one GICS sector.
- Which sector is performing best in 2026?
- Energy leads year to date at +61.8% (weighted by index weight within the sector); Consumer Discretionary trails at -1.7%.
Notes & related#
Sector classifications are GICS (each company in exactly one sector); weights are from the tracking fund's N-PORT holdings rolled forward daily by price, summed per sector. Because weights are market-cap weighted, a sector's share reflects investable size, not company count — Technology has 128 members but 36.5% of the weight. Sector pages: tech stocks, energy stocks; the full member list with weights is on the constituents page. Not investment advice.
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More on Russell 3000
- Companies & weights2567
- Stock performance2567
- Return calculator$1,691
- Dividend yield0.98%
- Buyback yield1.46%
- Shareholder yield2.45%
- Earnings$2.65T
- Returns by year+12.7%
