PMFinance|$683.2k Vol|
time12 days 6 hrs

Which companies added to S&P 500 in Q1 2026? - AI Odds Analysis

All Outcomes
Market Price
AI Fair Value
Value Edge
SoFi Technologies (SOFI)
YesNo
Affirm Holdings (AFRM)
YesNo
Pure Storage (PSTG)
YesNo
Alnylam Pharmaceuticals (ALNY)
YesNo
Strategy (MicroStrategy) (MSTR)
YesNo
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AI Insights:

2 hours ago Updated
Fair Value Reasoning:
S&P Global officially released the Q1 index rebalance announcement on March 6, 2026, and none of the listed companies were selected for inclusion in the S&P 500. The rebalance becomes effective on March 20. Since the primary catalyst event has passed, and the probability of an 'emergency addition' (caused by bankruptcy or M&A of an existing member) occurring and resolving before March 31 is statistically negligible, the true probability for all options is 0. Current 'Yes' prices reflect merely dead liquidity or extreme tail-risk hedging.

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Arbitrage|Low Risk

Arbitrage Plan:

Buy 'No' on SoFi Technologies (SOFI)

Plan Description:

While no direct 'Yes+No < 100' arbitrage exists, a high-probability 'yield arbitrage' is available. Since the S&P official announcement has already occurred and the list is finalized, the probability of 'Yes' is virtually zero. Buying SoFi 'No' at 97.4c for a 100c payout in ~12 days offers an absolute return of ~2.67% (approx. 81% annualized). This is a play on 'post-event' certainty, with the only risk being an extremely rare black swan event (e.g., an emergency index adjustment).

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Arbitrage: 2.6¢
|
Annualized yield: 81.4%
Hedging
VRT
MSTR
ALNY
SOFI
Inclusion in the S&P 500 typically triggers massive passive buying pressure (due to trillions of dollars tracking the index), causing the specific stock price to surge significantly (often 5-15% or more) post-announcement. Especially for a high-volatility stock like MicroStrategy (MSTR), inclusion could be seen as institutional validation of its Bitcoin strategy, causing extreme movement. The impact on the broad index itself is negligible.
Divergence
Clear divergence exists. The mainstream fact (S&P official announcement) dictates a 0% probability of inclusion, yet the prediction market implies a 1%-2.6% probability. This is not rational pricing based on information but rather typical 'longshot bias' or 'zombie pricing,' where holders are unwilling to sell at zero, or minimum price increments prevent the price from reaching absolute zero.

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