Michael Burry, a well-known skeptic of NVIDIA (NVDA.US) and the broader AI infrastructure boom, has once again taken aim at the chipmaker, comparing CEO Jensen Huang to Palantir CEO Alex Karp.

Burry, whose real-life story inspired the film "The Big Short" and who gained fame for accurately predicting the 2008 subprime crisis, currently holds put options on NVIDIA that would profit if the stock price falls.

Late Monday, in a chat thread on his Substack page, a user commented on Huang's recent flurry of media appearances. Burry replied: "He's becoming a bit of a Karp in that regard." Karp frequently appears in television interviews to discuss AI, Palantir, and the broader tech industry.

Huang's media blitz comes as some investors are raising concerns about NVIDIA's valuation and so-called circular financing in the AI industry.

Nvidia's $150 Billion Buyback Plan Draws Attention

Burry's comments came as NVIDIA is ramping up its share repurchase program. The company's board approved an additional $150 billion in share buyback authorization on Monday, bringing the total remaining authorization to $235 billion. NVIDIA expects to execute the plan through fiscal year 2028. The company described the increase as the largest buyback authorization boost in its history. Previously, NVIDIA had approved an $80 billion buyback authorization in May. According to the latest filings, NVIDIA repurchased $39.8 billion worth of shares in the first half of fiscal year 2027 alone.

In Burry's chat group, a user questioned the rationale of buying back stock during what was described as "crazy market conditions," arguing that management should preserve cash when stock valuations are high and deploy capital more aggressively when share prices are undervalued. Burry largely agreed but said: "Yes, this practice is currently more common overseas than in the US. In America, buybacks seem to have become a routine regardless of the level."

An Outspoken Critic

Burry has long been a skeptic of NVIDIA and the broader AI trade, repeatedly questioning the logic of AI investment and arguing that massive capital expenditure may not translate into sustainable returns. He has warned multiple times that surging AI spending and elevated valuations resemble a "bubble," questioned the sustainability of large-scale AI infrastructure investment, expressed concerns about companies' aggressive spending on NVIDIA GPUs, and criticized market euphoria over AI-driven growth.

Burry's short campaign against US AI stocks began in the third quarter of 2025 with put options on NVIDIA (NVDA.US) and Palantir (PLTR.US) with a notional value of roughly $1.1 billion. By 2026, it expanded into a full-chain short network covering semiconductors, memory, and AI infrastructure, including bearish bets against Micron Technology (MU.US), Oracle (ORCL.US), Nebius (NBIS.US), and the iShares Semiconductor ETF (SOXX).

More recently, Burry closed out unilateral short positions in NVIDIA, Palantir, Micron, Nebius, and other AI-related stocks, replacing many of them with put options expiring in 2027. He said new research prompted him to move up his bearish timeline, with "most" of the position adjustments stemming from his view that the AI bubble could burst "sooner than expected."

Recently, Burry noted that success in the artificial intelligence industry is now as critical to the US government as it is to the tech giants driving the boom. He believes that while he remains bearish on several companies at the core of the AI trade, AI infrastructure buildout has become a key force supporting the US economy.

On Stocktwits, retail sentiment toward NVIDIA remains in "bearish" territory, unchanged from last week, with some users discussing the latest buyback authorization. One trader wrote: "There's so much good news for NVIDIA that it's hard to justify the stock not rising significantly in the near term." Another said: "Investors should be satisfied if NVIDIA can rise today. This is exciting news. Keep holding."

As of the last close, NVIDIA's stock is up 23% year-to-date.