This event is highly correlated with Microsoft (MSFT), as MSFT holds significant profit-sharing rights and investment stakes; a high-valuation IPO would directly boost MSFT's balance sheet and stock price. Additionally, an OpenAI IPO acts as a critical validation point for the AI boom, creating significant sentiment spillover for AI infrastructure stocks like Nvidia (NVDA) and the Nasdaq 100. A massive valuation (e.g., >$1.6T) would confirm the longevity of the AI bull market.

April 29, 2026 - May 1, 2026, the $800B option quickly retreated from 87.5c to 75.5c. The reason is that expectations for a baseline valuation cooled down after a brief rally, with bullish funds taking profits and causing the price to return to its previous equilibrium level. April 28, 2026 - April 29, 2026, the $800B option surged from 74.5c to 87.5c. The reason is that market confidence in OpenAI achieving a minimum valuation of $800 billion significantly strengthened, with funds heavily entering the baseline valuation option for hedging and positioning towards high certainty. April 18, 2026 - April 19, 2026, the $1.6T option's price rebounded from 15.5c to 23.5c. The reason is that some speculative capital bought the dip after the previous oversold conditions, leading to a slight recovery in expectations for the extremely high valuation range. April 15, 2026 - April 18, 2026, the $1T option experienced severe volatility, surging from 51.5c to 63.5c (on the 17th) before falling back to 59.5c. Concurrently, the $1.6T option steadily declined from 24.5c to 15.5c. The reason is that after a brief spike, expectations for ultra-high valuations cooled down; some funds took profits, leading to a significant pullback in the probability of extreme valuation ranges. April 15, 2026 - April 17, 2026, the $1T option surged from 51.5c to 63.5c. The reason is a rapid rebound in market confidence regarding OpenAI's $1 trillion valuation, with a massive influx of bullish capital driving up the price. April 10, 2026 - April 11, 2026, the $1.2T option plummeted from 61c to 41c. The reason is a rapid rational correction by market funds regarding the severe logical inversion that occurred the previous day (where the probability of $1.2T was higher than $1T). Bulls took profits and adjusted their positions, bringing the price back to a reasonable range. April 9, 2026 - April 10, 2026, the $1.2T option surged from 34.5c to 61c. The reason is that after previous logical mispricing, bullish capital poured back into this range with aggressive momentum, causing a sharp rebound that even created a clear inverted arbitrage opportunity with the $1T option. April 8, 2026 - April 9, 2026, the $1.2T option plunged from 45c to 34.5c. The reason is that after previous capital rotations, support for the intermediate $1.2T valuation weakened, causing capital to split towards both ends and creating an illogical price inversion. April 7, 2026 - April 8, 2026, the $1T option plunged from 64c to 50c, while the $1.6T option surged from 13.5c to 25c, and the $1.4T option climbed from 27.5c to 35.5c. The reason is a massive rotation of market capital and upward revision of expectations; speculators, likely spurred by news of AI breakthroughs or highly favorable private funding valuation rumors, massively shifted bets from the conservative $1T floor to extreme valuation ranges above $1.4T. April 3, 2026 - April 6, 2026, the $1.2T option surged from 44c to 58.5c, while the $1T option rose from 53c to 63.5c. The reason is that bullish market sentiment was further consolidated, and after evaluating recent AI industry dynamics, investors increasingly view $1.2 trillion as a reasonable first-day target market cap for OpenAI's IPO. April 2, 2026 - April 5, 2026, the $1.2T option surged from 36c to 46.5c, while the $1T option rebounded from a low of 53c (April 3) to 63c. The reason is that after earlier washouts and corrections, bulls exerted force again, renewing bets on the $1 trillion to $1.2 trillion valuation range, viewing it as an attractive and relatively reasonable upside target for OpenAI's IPO. March 31, 2026 - April 2, 2026, the $1.2T option plummeted from 55.5c to 36c, and the $1.4T option plunged from 40c to 26.5c. The reason is that the market rapidly cooled off after earlier optimism, as investors realized the massive liquidity and macroeconomic challenges facing the realization of ultra-high valuations, leading to a large-scale retreat from bets on a market cap of $1.2 trillion and above. March 31, 2026 - April 1, 2026, the $800B option surged from 67c to 77.5c, while the $1.4T option plummeted from 40c to 27.5c. The reason is a 'bubble-squeezing' correction in IPO valuation expectations; investors solidified their confidence in a $800 billion 'floor' while slashing unrealistic bets on extreme valuations like $1.4 trillion. March 28, 2026 - March 31, 2026, the $1.2T option surged from 43c to 55c, driven by further fermentation of market optimism and bulls renewing heavy bets on OpenAI's ultra-high valuation potential, causing this bracket's implied probability to rapidly approach lower valuation tiers. March 27, 2026 - March 30, 2026, the $1.4T option surged from 26.5c to 40c, and the $1.2T option climbed from 36.5c to 48c. The reason is continued recovery in market sentiment, with bulls aggressively betting on ultra-high valuation ranges again after digesting earlier profit-taking. March 25, 2026 - March 29, 2026, the $1.4T option surged from 23.5c to 40c, due to recovering market sentiment and bulls renewing bets on ultra-high valuations. March 21, 2026 - March 25, 2026, price fluctuations across all options generally moderated, with no dramatic sudden changes exceeding 10c in a single day. After the collapse of high-strike prices and the turbulence of median strikes in the previous days, the market entered a relatively calm consolidation period, with bulls and bears seeking a new equilibrium through continuous gaming. March 20, 2026 - March 23, 2026, the $1.2T option exhibited significant instability, dropping sharply from 36c (Mar 20) to 30c (Mar 21) before rebounding to 33.5c on the 23rd. The reason is that panic from the crash in high-strike options briefly spread to median strikes, shaking bull confidence and triggering a stress test. March 18, 2026 - March 20, 2026, the $1.4T option plummeted from 37c to 26c, while the $1.6T option dropped to 22.5c. The reason was a market correction regarding expectations of OpenAI reaching hyper-valuations in the short term; bulls retreated en masse after realizing the unrealistic nature of the valuation leap (6-10x growth), causing prices to revert to logic.