How Does Russell Rank Day Work? What Is the Minimum Market Cap?

Russell rank day is the date on which FTSE Russell checks which U.S. companies are eligible for the Russell indexes and ranks them by total market capitalization, using each stock's closing price and shares outstanding. A company needs at least $30 million in total market cap on that day, plus a $1.00 close on its primary exchange and at least 5% free float. The next rank day is Friday, October 30, 2026, ahead of the December 11 reconstitution. No list is published that day, because the preliminary lists follow on November 13.

What is Russell rank day?

Rank day is the cut-off date of each Russell reconstitution. Under the Russell US Indexes methodology, all eligible securities are ranked on this day by total market capitalization, the largest 4,000 form the Russell 3000E, and the other Russell US indexes are drawn from that set. If fewer than 4,000 securities are eligible, all of them are included.

Eligibility is judged on public information available on rank day, with market capitalizations calculated at the market close. A stock must also be listed on rank day, and FTSE Russell must have documentation from that date supporting the company's eligibility, such as its corporate description, proof of incorporation, and number of shares outstanding. A company that misses either condition is not carried into the ranking.

Rank day, also called the rank date, is only a snapshot of the data and does not change any index. Reconstitution itself happens weeks later, and the sequence is laid out in hi2morrow's guide to when the Russell reconstitution takes place in December 2026.

When is the December 2026 rank day?

The December 2026 rank day is Friday, October 30, 2026. As of October 2026 it has not happened yet. FTSE Russell's December schedule describes it as the day when index eligibility and related data inputs are determined as of market close.

The date follows a fixed rule: the methodology sets the December rank day on the last business day of October, and the June rank day on the last business day of April, which was April 30 in 2026. A FTSE Russell notice from November 2025 kept the October cut-off when the event moved to December, and it lists the IPO review period for this cycle as August 3 to October 30, 2026.

Since the snapshot uses closing data, the final print on October 30 is what matters. The stock's behavior on November 2 or later cannot change the ranking, although corporate actions can, as described below.

What is the minimum market cap to be in a Russell index?

The minimum total market capitalization is $30 million on rank day. Section 5.9 of the methodology states that companies below that level are not eligible for the Russell US indexes, and LSEG's guide to the 2026 reconstitution repeats it.

This is an entry floor, not the size of a typical member. A stock that clears $30 million is only eligible; whether it lands in the Russell 3000, Russell 2000 or Russell Microcap depends on where its rank falls. The dollar breakpoints between those indexes move every cycle, and FTSE Russell publishes them with the preliminary lists. As of October 2026 the December breakpoints are unknown, and this article does not guess at them.

What other eligibility tests apply on rank day?

Three more tests apply on the same date. The price test requires a close at or above $1.00 on the stock's primary exchange. The free float test requires at least 5% of shares in the float, and the methodology states that 4.9999% or less is ineligible. The voting rights test requires at least 5% of a company's voting rights, aggregated across all equity securities, to be held by unrestricted shareholders.

The price test has one softener. If an existing index member closes below $1.00 on rank day, it can still qualify when the average of its daily closes over the 30 days before rank day is at or above $1.00. A new candidate gets no such cushion, so a stock that finishes October 30 at $0.98 and is not already a member fails the test.

Voting rights follow a slower schedule. For current members they are reviewed once a year in June, while potential new additions are reviewed in both June and December. Reading section 5.15.2 that way, a December rank day applies the voting rights test to new candidates rather than to established members, so it is more likely to catch a newcomer with an unusual share structure than to remove a current member.

Not every security counts as a share, either. Preferred stock, warrants, rights, depositary receipts and similar instruments are excluded, so a company's market cap for Russell purposes is built mainly from its common stock. If several classes of common stock exist, they are combined to get the total.

How is market cap measured on rank day?

Market cap on rank day is total outstanding shares multiplied by the last price traded on the primary exchange that day. Sections 6.1 and 6.3 of the methodology describe it that way, and the shares count is the total, not just the free float.

Take ABC, a hypothetical company with 12,000,000 shares outstanding. If it closes at $2.40 on October 30, its total market cap is $28.8 million, which is below the $30 million floor, so it is not eligible. If it closes at $2.60 instead, the market cap is $31.2 million and it clears the floor. Clearing the floor is not the same as joining an index: ABC would still need a $1.00 close, 5% free float and 5% voting rights, and it would still have to rank inside the top 3,000 for the Russell 3000 or the top 4,000 for the Russell 3000E. The ticker and numbers are illustrative.

After the cut-off, ranking determines the indexes. The Russell 1000 holds companies 1 to 1,000 by descending market cap, the Russell 2000 holds 1,001 to 3,000, and the Russell Microcap holds 2,001 to 4,000, so Microcap overlaps the bottom of the Russell 2000. Current Russell 3000 members get banding: a cumulative band of plus or minus 2.5% around rank 1,000 and plus or minus 0.5% around rank 2,000, so they do not switch indexes on a marginal change. Banding does not apply to non-members, which are treated as new additions.

What happens after rank day?

The first public output comes on Friday, November 13, 2026, when preliminary additions and deletions are published after the U.S. close. LSEG's Russell reconstitution page also says that updates to the preliminary lists follow on November 20, November 27 and December 4. Between November 16 and 27 FTSE Russell takes queries on the data, lockdown begins on November 30, and the changes take effect after the close on December 11, with the new indexes live on December 14.

Corporate actions are the main thing that can reshape the ranking after October 30. Under section 6.4 of the methodology, mergers and spin-offs that become effective between rank day and the business day before lockdown lead to a recalculation of the affected market caps and a fresh membership review. Events inside lockdown do not. A non-member judged ineligible on rank day is not re-evaluated after a later corporate action.

Newly listed companies follow their own track. A stock that went public in the August 3 to October 30 window falls under the December IPO review rather than being a plain rank day case. How such a listing first opens for trading is covered in hi2morrow's guide to why a U.S. IPO doesn't start trading at 9:30 a.m.

Does a high rank on rank day guarantee a spot in the index?

No. A high rank is not a membership decision, because eligibility is tested first and ranking second. A company with a large market cap can still be excluded for failing the price, float, voting rights, listing or documentation tests, and a company that ranks just inside a boundary can stay where it was if it is an existing member protected by banding.

The inverse also holds: failing on October 30 is not always final for existing members. A current member under $1.00 can pass on the 30-day average, and banding can keep a member in its current index even when its rank has slipped across a breakpoint.

Alexander Styopin's professional view: rank day is a deadline for the data, not a trading event, and the most common misreading is treating a stock's position in a ranking as the answer to whether it will be added. Most eligibility tests are binary and checked on one close, so for a new candidate a single weak print on October 30 can matter more than weeks of strength. For a trader, the practical use of rank day is to know what the list on November 13 can and cannot contain, and to avoid reading a company's size alone as a prediction of its index status.

Educational material only. Not investment advice. Index rules and schedules can change, and order handling can vary by broker and exchange.

Author: Alexander Styopin, hi2morrow analyst and economist with 25 years of experience in the US stock market