Casey's General Stores Set to Join S&P 500; DigitalOcean Holdings to Join S&P MidCap 400; Broadstone Net Lease to Join S&P SmallCap 600

Rhea-AI Summary

Broadstone Net Lease (NYSE: BNL) will be added to the S&P SmallCap 600 effective prior to the opening of trading on April 9, 2026, replacing DigitalOcean Holdings (DOCN). The change is part of concurrent index rebalances that move Casey's General Stores (CASY) into the S&P 500 and DOCN into the S&P MidCap 400.

The table of changes lists each addition and deletion by index and sector on the effective date.

Positive

• BNL added to S&P SmallCap 600 effective Apr 9, 2026
• Index membership change is explicitly scheduled and replaces DOCN in SmallCap 600 on Apr 9, 2026

Negative

• None.

News Market Reaction – CASY

-0.80%

1 alert

-0.80% Session close to close

$27.64B Market Cap

0.1x Rel. Volume

In the Apr 7 session, CASY declined 0.80%, reflecting a mild negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement details Casey’s transition from the S&P MidCap 400 into the S&P 500 effective Apri...

Analysis

This announcement details Casey’s transition from the S&P MidCap 400 into the S&P 500 effective April 9, 2026, with related changes for DigitalOcean and Broadstone Net Lease. For Casey’s, this follows strong recent earnings and prior communication about index inclusion. Investors may track how index rebalancing affects ownership mix and liquidity, alongside ongoing fundamentals such as margins, same-store sales and capital-allocation actions disclosed in recent 8-K and 10-Q filings.

Key Figures

Effective index change date: April 9, 2026 Expected deal completion: April 7, 2026

2 metrics

Effective index change date April 9, 2026 Date CASY joins S&P 500 and leaves S&P MidCap 400

Expected deal completion April 7, 2026 Expected completion date of Hologic acquisition by Blackstone and TPG affiliates

Historical Context

5 past events · Latest: Apr 09 (Positive)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Apr 09	Index inclusion	Positive	+0.1%	Casey’s added to the S&P 500 for the first time since going public.
Mar 09	Earnings results	Positive	+3.8%	Strong Q3 with higher EPS, net income, EBITDA and solid same-store sales.
Feb 19	Earnings timing	Neutral	+0.8%	Announcement of Q3 earnings release date and conference call details.
Jan 20	Brand partnership	Positive	-0.3%	Limited-time Monster Energy flavor launch and joint charitable donation.
Jan 07	Product launch	Positive	+1.7%	Debut of Barn Burner Chicken Pizza promoted with celebrity chef tie-in.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent news, including index inclusion and strong earnings, generally saw modest positive price reactions, with only one notable divergence on a partnership announcement.

Recent Company History

Over the last several months, Casey’s highlighted new products, partnerships and strong financial performance. On March 9, 2026, it reported robust Q3 results with higher EPS, net income and EBITDA, and reiterated solid same-store sales trends. Earlier news featured product launches and a co-branded promotion with Monster Energy plus charitable giving milestones. The company also announced its addition to the S&P 500 effective April 9, 2026. Today’s index-change announcement fits into a trajectory of operational strength and rising market profile.

Key Terms

s&p 500, s&p midcap 400, s&p smallcap 600, gics sector

4 terms

s&p 500 financial

"Casey's General Stores Inc. (NASD: CASY) will replace Hologic Inc. (NASD: HOLX) in the S&P 500"

The S&P 500 is a broad stock market index that tracks the performance of 500 large U.S. companies, weighted so bigger firms have a larger impact. Investors use it like a thermometer or benchmark to judge how the overall U.S. stock market or a portfolio is doing; movements in the index influence investor sentiment, fund performance, and many passive investment products that aim to match its returns.

View in glossary

s&p midcap 400 financial

"DigitalOcean Holdings Inc. (NYSE: DOCN) will replace Casey's General Stores in the S&P MidCap 400"

The S&P MidCap 400 is a group of 400 companies that are smaller than the big, well-known corporations but larger than tiny startups. It helps investors see how medium-sized companies are performing in the stock market, acting like a barometer for this middle-sized group of businesses.

s&p smallcap 600 financial

"Broadstone Net Lease Inc. (NYSE: BNL) will replace DigitalOcean Holdings in the S&P SmallCap 600"

A stock market index made up of 600 small-cap U.S. companies chosen to represent the performance of smaller publicly traded firms. It matters to investors because it acts like a temperature gauge for the small-company segment of the market, serving as a benchmark for fund managers, a basis for index funds and ETFs, and a way to compare returns and risk when building a diversified portfolio.

gics sector financial

"Effective Date | Index Name | Action | Company Name | Ticker | GICS Sector"

GICS sector is one of the major industry groupings from the Global Industry Classification Standard, a system that sorts companies into consistent categories (like Technology or Health Care) based on the primary business they do. Investors use these sectors like folders in a filing cabinet to compare companies, build diversified portfolios, and track how whole parts of the market are performing rather than focusing on single stocks.

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

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NEW YORK, April 6, 2026 /PRNewswire/ -- S&P MidCap 400 constituent Casey's General Stores Inc. (NASD: CASY) will replace Hologic Inc. (NASD: HOLX) in the S&P 500, S&P SmallCap 600 constituent DigitalOcean Holdings Inc. (NYSE: DOCN) will replace Casey's General Stores in the S&P MidCap 400, and Broadstone Net Lease Inc. (NYSE: BNL) will replace DigitalOcean Holdings in the S&P SmallCap 600 effective prior to the opening of trading on Thursday, April 9. Affiliates of Blackstone Inc. and TPG Global are acquiring Hologic in a deal expected to be completed on or about April 7.

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
Apr 9, 2026	S&P 500	Addition	Casey's General Stores	CASY	Consumer Staples
Apr 9, 2026	S&P 500	Deletion	Hologic	HOLX	Health Care
Apr 9, 2026	S&P MidCap 400	Addition	DigitalOcean Holdings	DOCN	Information Technology
Apr 9, 2026	S&P MidCap 400	Deletion	Casey's General Stores	CASY	Consumer Staples
Apr 9, 2026	S&P SmallCap 600	Addition	Broadstone Net Lease	BNL	Real Estate
Apr 9, 2026	S&P SmallCap 600	Deletion	DigitalOcean Holdings	DOCN	Information Technology

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View original content:https://www.prnewswire.com/news-releases/caseys-general-stores-set-to-join-sp-500-digitalocean-holdings-to-join-sp-midcap-400-broadstone-net-lease-to-join-sp-smallcap-600-302735034.html

SOURCE S&P Dow Jones Indices

FAQ

When will Broadstone Net Lease (BNL) join the S&P SmallCap 600?

BNL will join the S&P SmallCap 600 prior to the opening of trading on April 9, 2026. According to S&P Dow Jones Indices, the change is part of a coordinated rebalance affecting multiple indices that day.

What index change causes BNL to be added to S&P SmallCap 600 on April 9, 2026?

BNL is added to the S&P SmallCap 600 replacing DigitalOcean Holdings (DOCN) on April 9, 2026. According to S&P Dow Jones Indices, this follows concurrent moves of CASY and DOCN across other indices.

Will the S&P SmallCap 600 addition for BNL be effective before market open April 9, 2026?

Yes, the BNL addition is effective prior to the opening of trading on April 9, 2026. According to S&P Dow Jones Indices, all listed changes occur before the market opens that day.

Which company does BNL replace in the S&P SmallCap 600 and what is the ticker?

Broadstone Net Lease replaces DigitalOcean Holdings (DOCN) in the S&P SmallCap 600 effective Apr 9, 2026. According to S&P Dow Jones Indices, DOCN moves out concurrent with other index adjustments.

How is the April 9, 2026 index reshuffle coordinated among CASY, DOCN, HOLX, and BNL?

The reshuffle moves CASY into the S&P 500, DOCN into the S&P MidCap 400, and BNL into the S&P SmallCap 600 on Apr 9, 2026. According to S&P Dow Jones Indices, these are simultaneous, scheduled index changes.

Where can investors verify the effective date and index actions for BNL (NYSE: BNL)?

Investors can verify the Apr 9, 2026 effective date and index actions through S&P Dow Jones Indices releases. According to S&P Dow Jones Indices, the table of additions and deletions lists each change and ticker.