Core Viewpoint - Jim Cramer advises caution in investing in quantum computing stocks despite some exchange-traded funds (ETFs) performing well, with only one out of three ETFs showing a decline over the past year [1] Group 1: Quantum Computing Stocks Performance - The WisdomTree Quantum Computing Fund is down by 14% over the past year, while the VanEck Quantum Computing UCITS ETF and Defiance Quantum ETF are up by 21.8% and 38.9%, respectively [1] - Quantum Computing, Inc. (NASDAQ:QUBT) has seen its shares decline by 57% since Cramer's remarks in January 2025, with a significant drop of 48% following comments from NVIDIA's CEO about the future of quantum computing [5][6] - IonQ, Inc. (NYSE:IONQ) shares are up by 47% over the past year but down by 17% since Cramer's discussion in May 2025, experiencing a peak increase of 242% between March and September 2025 before a subsequent decline [7] Group 2: Hedge Fund Interest - Quantum Computing, Inc. had 2 hedge fund holdings in Q3 2024, which increased to 11 by Q4 2025, indicating growing interest despite its poor performance [5] - IonQ, Inc. maintained 28 hedge fund holdings in both Q1 and Q4 of 2025, reflecting consistent interest from hedge funds despite its volatility [7] Group 3: Cramer's Insights - Cramer expressed concerns about Quantum Computing, Inc., highlighting its low revenue of $400,000 against a market cap of $2.4 billion, and noted significant losses [6] - Cramer warned that IonQ, Inc. was too expensive and speculative, despite its potential in the quantum computing sector [7]