US-EU Index Rebalances / Quantitative Researcher, ORTEX

Dimitris Ioannidis

US-EU Index Rebalances / Quantitative Researcher

Global Financial Data and Analytics Platform

ORTEX

ORTEX is a global financial data and analytics platform providing real-time securities lending and short interest data, index rebalance data, holdings and insider transactions, trading signals, corporate actions and news,  stock machine learning and factor scores and other analytics. The majority of the data are downloadable and accessible through APIs.

Index Rebalance

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<li>
<a href="https://www.smartkarma.com/entities/marvell-technology-inc" target="_blank" data-smartkarma-citation="entities:15837:1" rel="noopener">Marvell Technology (MRVL US)</a> became eligible at the last minute for S&amp;P500 inclusion in the December 2025 review, following positive Q3 earnings.</li>
<li>
<a href="https://www.smartkarma.com/entities/marvell-technology-inc" target="_blank" data-smartkarma-citation="entities:15837:1" rel="noopener">Marvell Technology (MRVL US)</a> experienced a significant turnaround in profitability in the last year, but its latest earnings are driven by non-operational activity.</li>
<li>The company's market cap and other eligibility metrics are estimated to place it among the top addition candidates for S&amp;P500 with a higher chance of inclusion in 2026.</li>
</ul>



Marvell Technology (MRVL US) became eligible at the last minute for S&amp;P500 inclusion in the December 2025 review, following positive Q3 earnings.

Marvell Technology (MRVL US) experienced a significant turnaround in profitability in the last year, but its latest earnings are driven by non-operational activity.
The company's market cap and other eligibility metrics are estimated to place it among the top addition candidates for S&amp;P500 with a higher chance of inclusion in 2026.


Marvell Technology (MRVL US): Heroic Earnings Unlock S&P500 Eligibility

Index Rebalance and Special Situations Coverage, Quiddity Advisors

Anjana Amarasuriya

Index Rebalance and Special Situations Coverage

Quiddity Advisors

Pan-Asia Catalysts/Events

<ul><li>The SP 500 index tracks the 500 largest names listed in the US and it is one of the most highly-tracked indices in the world.</li><li>In this insight, we take a look at the upcoming constituent changes in the run up to the December 2025 index rebal event.</li><li>The index changes for the December 2025 rebal will be based on the open of 3rd December 2025 and announced after the close of 5th December 2025.</li></ul>

The SP 500 index tracks the 500 largest names listed in the US and it is one of the most highly-tracked indices in the world.In this insight, we take a look at the upcoming constituent changes in the run up to the December 2025 index rebal event.The index changes for the December 2025 rebal will be based on the open of 3rd December 2025 and announced after the close of 5th December 2025.

Quiddity Leaderboard SP500/600 Dec25 Rebal: Last Minute Surprise in The Leading Names

<ul>
<li>
<a href="https://www.smartkarma.com/entities/crh-plc-054117b2-cd70-470a-9efc-8f6fab2c83ec" target="_blank" data-smartkarma-citation="entities:28655:1" rel="noopener">CRH (CRH US)</a> and <a href="https://www.smartkarma.com/entities/comfort-systems-usa-inc" target="_blank" data-smartkarma-citation="entities:6730:1" rel="noopener">Comfort Systems USA (FIX US)</a> are the main candidates for addition due to consistently high eligibility scores.</li>
<li>
<a href="https://www.smartkarma.com/entities/pure-storage-inc" target="_blank" data-smartkarma-citation="entities:27421:1" rel="noopener">Pure Storage Inc (PSTG US)</a> and <a href="https://www.smartkarma.com/entities/solstice-advanced-materials" target="_blank" data-smartkarma-citation="entities:45953:1" rel="noopener">Solstice Advanced Materials (SOLS US)</a> face reduced conviction due to sector balance and turnover.</li>
<li>
<a href="https://www.smartkarma.com/entities/vertiv-holdings-co" target="_blank" data-smartkarma-citation="entities:33140:1" rel="noopener">Vertiv Holdings Co (VRT US)</a> has a higher probability of inclusion following the acquisition of <a href="https://www.smartkarma.com/entities/kellogg-co" target="_blank" data-smartkarma-citation="entities:16090:1" rel="noopener">Kellogg Co (K US)</a> which is still pending.</li>
</ul>



CRH (CRH US) and Comfort Systems USA (FIX US) are the main candidates for addition due to consistently high eligibility scores.

Pure Storage Inc (PSTG US) and Solstice Advanced Materials (SOLS US) face reduced conviction due to sector balance and turnover.

Vertiv Holdings Co (VRT US) has a higher probability of inclusion following the acquisition of Kellogg Co (K US) which is still pending.


S&P500 December 2025 Final Forecast: FIX & CRH Leading the Pack

Equity Long-Short, Semiconductors, Fabricated Knowledge

Douglas O'Laughlin

Equity Long-Short, Semiconductors

Fabricated Knowledge

Learn more about the world's most important manufactured product. Meaningful insight, timely analysis, and an occasional investment idea.

Equity Bottom-Up

<ul>
<li>
Investing in semiconductors can be pretty simple if you let it be.
</li>
<li>
At a high level, I believe you want to invest in the secular at a decent price or invest in places where there are unwarranted dislocations.
</li>
<li>
Sometimes the entire ecosystem says one thing and the stocks say another. Usually, the ecosystem is right.

</li>
</ul>



Investing in semiconductors can be pretty simple if you let it be.


At a high level, I believe you want to invest in the secular at a decent price or invest in places where there are unwarranted dislocations.


Sometimes the entire ecosystem says one thing and the stocks say another. Usually, the ecosystem is right.




Alnylam Pharmaceuticals / Index Rebalance

<ul>
<li>
<a href="https://www.smartkarma.com/entities/alnylam-pharmaceuticals-inc" target="_blank" data-smartkarma-citation="entities:2191:1" rel="noopener">Alnylam Pharmaceuticals (ALNY US)</a> just became eligible for S&amp;P500 following positive earnings released on 30 October 2025.</li>
<li>The company's market cap and other eligibility metrics are estimated to place it among the top 5 addition candidates for S&amp;P500 with a higher chance of inclusion in 2026.</li>
<li>Top 3 addition candidates for S&amp;P500 are <a href="https://www.smartkarma.com/entities/crh-plc-054117b2-cd70-470a-9efc-8f6fab2c83ec" target="_blank" data-smartkarma-citation="entities:28655:1" rel="noopener">CRH</a>, <a href="https://www.smartkarma.com/entities/comfort-systems-usa-inc" target="_blank" data-smartkarma-citation="entities:6730:1" rel="noopener">FIX</a> and <a href="https://www.smartkarma.com/entities/pure-storage-inc" target="_blank" data-smartkarma-citation="entities:27421:1" rel="noopener">PSTG</a> with the next inclusion expected by the end of November following the Omnicom-Interpublic $13bn acquisition.</li>
</ul>



Alnylam Pharmaceuticals (ALNY US) just became eligible for S&amp;P500 following positive earnings released on 30 October 2025.
The company's market cap and other eligibility metrics are estimated to place it among the top 5 addition candidates for S&amp;P500 with a higher chance of inclusion in 2026.
Top 3 addition candidates for S&amp;P500 are CRH, FIX and PSTG with the next inclusion expected by the end of November following the Omnicom-Interpublic $13bn acquisition.


Alnylam Pharmaceuticals (ALNY US): On Track for S&P500 Inclusion Following Positive Earnings

United States

Vertiv Holdings Co operates as a holding company. The Company, through its subsidiaries, provides electrical power equipment, thermal management, racks and enclosures, monitoring and management, tools, and other services. Vertiv Holdings serves data centers, communication networks, commercial, and industrial environments worldwide.

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Vertiv Holdings Co (VRT US)

Marvell Technology (MRVL US): Heroic Earnings Unlock S&P500 Eligibility

MRVL is labelled bullish for index rebalance but bearish in fundamentals following the fourth consecutive positive earnings and high price-to...

Dimitris Ioannidis

Quiddity Leaderboard SP500/600 Dec25 Rebal: Last Minute Surprise in The Leading Names

SP500 rankings will be decided at today's open and announced on 5 December after the close. We see $100bn to trade across the SP500 complex. Kalshi...

Anjana Amarasuriya

S&P500 December 2025 Final Forecast: FIX & CRH Leading the Pack

CRH and FIX are top candidates for addition in December 2025, while PSTG and SOLS face reduced conviction. VRT has a higher chance of inclusion...

Dimitris Ioannidis

Why HBM is the Hottest Thing in Memory

Micron's earnings is just a rehash of what I already talked about. Memory pricing increase is driven by HBM shifting the mix of investment there,...

Fabricated Knowledge

Alnylam Pharmaceuticals (ALNY US): On Track for S&P500 Inclusion Following Positive Earnings

After several extensions, Omnicom and IPG have just confirmed that the European Commission has granted antitrust approval for the acquisition,...

Dimitris Ioannidis

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Marvell Technology (MRVL US): Heroic Earnings Unlock S&P500 Eligibility

MRVL is labelled bullish for index rebalance but bearish in fundamentals following the fourth consecutive positive earnings and high price-to...

Dimitris Ioannidis

Quiddity Leaderboard SP500/600 Dec25 Rebal: Last Minute Surprise in The Leading Names

SP500 rankings will be decided at today's open and announced on 5 December after the close. We see $100bn to trade across the SP500 complex. Kalshi...

Anjana Amarasuriya

S&P500 December 2025 Final Forecast: FIX & CRH Leading the Pack

​CRH and FIX are top candidates for addition in December 2025, while PSTG and SOLS face reduced conviction. VRT has a higher chance of inclusion...

Dimitris Ioannidis

Why HBM is the Hottest Thing in Memory

Micron's earnings is just a rehash of what I already talked about. Memory pricing increase is driven by HBM shifting the mix of investment there,...

Fabricated Knowledge

Alnylam Pharmaceuticals (ALNY US): On Track for S&P500 Inclusion Following Positive Earnings

After several extensions, Omnicom and IPG have just confirmed that the European Commission has granted antitrust approval for the acquisition,...

Dimitris Ioannidis

CRH and FIX are top candidates for addition in December 2025, while PSTG and SOLS face reduced conviction. VRT has a higher chance of inclusion...