Five9 Set to Join S&P SmallCap 600

Q: Which company is Five9 (FIVN) replacing in the S&P SmallCap 600 on August 3, 2026?

Five9 is replacing Two Harbors Investment (TWO) in the S&P SmallCap 600. According to S&P Dow Jones Indices, the change becomes effective prior to the opening of trading on August 3, 2026, after the Two Harbors acquisition closes.

Five9 (NASD: FIVN) will join the S&P SmallCap 600, replacing Two Harbors Investment (NYSE: TWO) effective prior to the market open on Monday, August 3, 2026.

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Rhea-AI Summary

Five9 (NASD: FIVN) will join the S&P SmallCap 600, replacing Two Harbors Investment (NYSE: TWO) effective prior to the market open on Monday, August 3, 2026. S&P Dow Jones Indices states this change follows CrossCountry Mortgage’s planned acquisition of Two Harbors, which remains subject to final closing conditions.

Positive

Five9 added to S&P SmallCap 600 effective August 3, 2026
Index change tied to completed acquisition process as closing conditions for Two Harbors deal near completion

Negative

Two Harbors removed from S&P SmallCap 600 on August 3, 2026
Index deletion linked to acquisition, ending Two Harbors’ representation in this benchmark

Argus Jul 30 session 2 alerts

+0.08% close to close 0.7x rel. volume Open Argus

Details

News Market Reaction – TWO

$1.27B Mkt Cap at Peak Alert

On Jul 30, the first trading day after this news, TWO closed 0.08% above the previous close. Our momentum scanner recorded 2 alerts for this stock that day.

Data tracked by StockTitan Argus for the Jul 30 session.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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07/29/2026 - 05:41 PM EDT

NEW YORK, July 29, 2026 /PRNewswire/ -- Five9, Inc. (NASD: FIVN) will replace Two Harbors Investment Corp. (NYSE: TWO) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, August 3. CrossCountry Mortgage, LLC is acquiring Two Harbors Investment Corp. in a deal expected to close soon, pending final closing conditions.

Following is a summary of the changes that will take place prior to the open of trading on the effective date:

Effective Date	Index Name	Action	Company Name	Ticker	GICS Sector
August 3, 2026	S&P SmallCap 600	Addition	Five9	FIVN	Information Technology
August 3, 2026	S&P SmallCap 600	Deletion	Two Harbors Investment	TWO	Financials

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View original content:https://www.prnewswire.com/news-releases/five9-set-to-join-sp-smallcap-600-302838329.html

SOURCE S&P Dow Jones Indices

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

When will Five9 (FIVN) be added to the S&P SmallCap 600 index?

Five9 will be added to the S&P SmallCap 600 before trading opens on August 3, 2026. According to S&P Dow Jones Indices, Five9 will replace Two Harbors Investment as part of a scheduled index rebalancing.

Why is Two Harbors Investment (TWO) being removed from the S&P SmallCap 600?

Two Harbors Investment will be removed because CrossCountry Mortgage is acquiring the company. According to S&P Dow Jones Indices, the deletion from the S&P SmallCap 600 is effective August 3, 2026, pending final closing conditions of the transaction.

Which company is Five9 (FIVN) replacing in the S&P SmallCap 600 on August 3, 2026?

Five9 is replacing Two Harbors Investment (TWO) in the S&P SmallCap 600. According to S&P Dow Jones Indices, the change becomes effective prior to the opening of trading on August 3, 2026, after the Two Harbors acquisition closes.

How does joining the S&P SmallCap 600 affect Five9 (FIVN) shares?

The announcement confirms Five9’s inclusion in a widely followed small-cap index. According to S&P Dow Jones Indices, Five9 will join the S&P SmallCap 600 on August 3, 2026, potentially impacting index-tracking fund ownership and trading activity.

What role does S&P Global (SPGI) play in the Five9 and Two Harbors index change?

S&P Dow Jones Indices, a division of S&P Global, manages the S&P SmallCap 600. According to S&P Dow Jones Indices, it decided to add Five9 and delete Two Harbors as part of its regular index maintenance process.

Five9 Set to Join S&P SmallCap 600