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Finance·Indicies

Which companies added to S&P 500 in Q1 2026?

Market icon
Finance·Indicies

Which companies added to S&P 500 in Q1 2026?

Ended: Mar 31

Ended: Mar 31

$1,021,412 Vol.

Mar 31, 2026
Polymarket

$1,021,412 Vol.

Polymarket
Will Vertiv Holdings (VRT) be added to the S&P 500 by March 31, 2026? icon

Vertiv Holdings (VRT)

$0 Vol.

Yes

Will Pure Storage (PSTG) be added to the S&P 500 by March 31, 2026? icon

Pure Storage (PSTG)

$79,627 Vol.

No

Will SoFi Technologies (SOFI) be added to the S&P 500 by March 31, 2026? icon

SoFi Technologies (SOFI)

$273,474 Vol.

No

Will Ciena (CIEN) be added to the S&P 500 by March 31, 2026? icon

Ciena (CIEN)

$40,225 Vol.

Yes

Will Strategy (MicroStrategy) (MSTR) be added to the S&P 500 by March 31, 2026? icon

Strategy (MicroStrategy) (MSTR)

$356,557 Vol.

No

Will Alnylam Pharmaceuticals (ALNY) be added to the S&P 500 by March 31, 2026? icon

Alnylam Pharmaceuticals (ALNY)

$109,253 Vol.

No

Will Affirm Holdings (AFRM) be added to the S&P 500 by March 31, 2026? icon

Affirm Holdings (AFRM)

$162,277 Vol.

No

The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026. This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, the listed ticker must match the announced ticker added to the index. An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date. The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).S&P Dow Jones Indices announced on March 13, 2026, the Q1 rebalance additions to the S&P 500—Vertiv Holdings (VRT), Lumentum Holdings (LITE), Coherent Corp. (COHR), and EchoStar Corp. (SATS)—effective March 23, driven by their surging market caps exceeding $20 billion each, positive trailing 12-month earnings, and high liquidity amid AI infrastructure and data-center demand. These selections reflect trader consensus on tech-adjacent growth stocks outperforming traditional criteria, replacing laggards like Match Group amid sector rotation. Index funds tracking $15 trillion in assets triggered sharp share-price rallies of 5-10% post-announcement, amplifying trading volume. Traders should monitor June's rebalance for similar dynamics, as profitability thresholds and mid-cap promotions continue shaping constituent shifts.

The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026.

This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."

To qualify, the listed ticker must match the announced ticker added to the index.

An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date.

The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).
Volume
$1,021,412
End Date
Mar 31, 2026
Market Opened
Dec 17, 2025, 5:25 PM ET

Resolver

0x65070BE91...
The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026. This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, the listed ticker must match the announced ticker added to the index. An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date. The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).

Outcome proposed: No

No dispute

Final outcome: No

The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026. This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, the listed ticker must match the announced ticker added to the index. An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date. The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).S&P Dow Jones Indices announced on March 13, 2026, the Q1 rebalance additions to the S&P 500—Vertiv Holdings (VRT), Lumentum Holdings (LITE), Coherent Corp. (COHR), and EchoStar Corp. (SATS)—effective March 23, driven by their surging market caps exceeding $20 billion each, positive trailing 12-month earnings, and high liquidity amid AI infrastructure and data-center demand. These selections reflect trader consensus on tech-adjacent growth stocks outperforming traditional criteria, replacing laggards like Match Group amid sector rotation. Index funds tracking $15 trillion in assets triggered sharp share-price rallies of 5-10% post-announcement, amplifying trading volume. Traders should monitor June's rebalance for similar dynamics, as profitability thresholds and mid-cap promotions continue shaping constituent shifts.

The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026.

This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."

To qualify, the listed ticker must match the announced ticker added to the index.

An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date.

The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).
Volume
$1,021,412
End Date
Mar 31, 2026
Market Opened
Dec 17, 2025, 5:25 PM ET

Resolver

0x65070BE91...
The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026. This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, the listed ticker must match the announced ticker added to the index. An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date. The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).

Outcome proposed: No

No dispute

Final outcome: No

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Frequently Asked Questions

"Which companies added to S&P 500 in Q1 2026?" is a prediction market on Polymarket with 7 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Vertiv Holdings (VRT)" at 100%, followed by "Ciena (CIEN)" at 100%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 100¢ implies that the market collectively assigns a 100% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Which companies added to S&P 500 in Q1 2026?" has generated $1 million in total trading volume since the market launched on Dec 17, 2025. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Which companies added to S&P 500 in Q1 2026?," browse the 7 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Which companies added to S&P 500 in Q1 2026?" is "Vertiv Holdings (VRT)" at 100%, meaning the market assigns a 100% chance to that outcome. The next closest outcome is "Ciena (CIEN)" at 100%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Which companies added to S&P 500 in Q1 2026?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.