Wednesday wasn't exactly a banner day for the broader market. The Nasdaq tumbled more than 200 points, dropping 1% to close at 23,471.74. The S&P 500 slipped 0.5% to 6,926.60, while the Dow Jones Industrial Average managed to hold relatively steady with just a 0.09% decline to 49,149.63.

But while the major indices treaded water, some individual stocks made serious moves. Here's what caught the attention of retail traders throughout the session.

High Roller Technologies Explodes on Crypto Partnership

High Roller Technologies Inc. (ROLR) delivered the kind of day traders dream about, rocketing 441.26% higher to close at $18.89. The stock hit an intraday peak of $33.68 and a low of $12.33, with its 52-week range now spanning from $1.16 to that new high of $33.68. After hours, shares cooled off slightly, declining 4.87% to $17.97.

The catalyst? High Roller Technologies announced it signed a binding letter of intent with Crypto.com | Derivatives North America for an exclusive U.S. partnership focused on launching an event-based prediction markets product.

Here's how it would work: Crypto.com's CFTC-registered derivatives unit would provide prediction contracts directly on HighRoller.com, with a target launch date in the first quarter of 2026, pending definitive agreements. It's the kind of regulatory-compliant crypto play that can send speculative stocks into orbit.

Critical Metals Jumps on Rare Earth Drilling Results

Critical Metals Corp (CRML) surged 32.58%, ending the day at $17.93. The stock touched an intraday high of $19.05 and a low of $13.27, with its 52-week range between $1.23 and $32.15. In extended trading, shares dipped 1.81% to $17.60.

The move came after Critical Metals reported impressive assay results from its 2025 drilling campaign at the Tanbreez rare earths project in Greenland. The numbers tell a compelling story about what might be sitting beneath the surface.

The latest data revealed near-surface grades of roughly 0.40% to 0.47% total rare earth oxides plus yttrium, with heavy rare earths making up about 26% to 27% of the mix. Perhaps more importantly, the drilling confirmed that this mineralization extends consistently for nearly a kilometer.

The company also identified meaningful by-products including gallium and hafnium, which bolsters Tanbreez's potential as a diversified, multi-commodity deposit rather than a single-trick play.

MongoDB Slides Despite Bullish Analyst Coverage

MongoDB, Inc. (MDB) dropped 5.91% to close at $386.89. The stock reached an intraday high of $410.36 before pulling back to a low of $385.45. Its 52-week range sits between $140.94 and $444.72.

Interestingly, the decline came even as analysts maintained a broadly bullish stance on the database software company. Five recent ratings averaged a $496 price target, with multiple Buy and Outperform calls clustering around the $500 level. Barclays reiterated an Overweight rating with a $480 target, while Needham, RBC Capital, and Truist all reaffirmed Buy or Outperform views at $500.

Options activity showed mixed but slightly bullish positioning from large traders, though that remained secondary to the constructive analyst outlook. Sometimes stocks just need to digest recent gains, regardless of what the experts say.

Citigroup Posts Mixed Quarter With Russia Exit Weighing

Citigroup Inc. (C) declined 3.34% to close at $112.41. The banking giant hit an intraday high of $118.75 and a low of $110.46, with its 52-week high at $124.17 and low at $55.51.

Citigroup delivered mixed fourth-quarter results that left investors scratching their heads. On one hand, adjusted earnings per share of $1.81 beat estimates. On the other, revenue of $19.87 billion came in light of expectations.

Net income fell 13% to $2.5 billion, dragged down by a $1.1 billion after-tax loss tied to the bank's exit from Russia and a 6% increase in operating expenses. Those aren't small numbers when you're trying to convince investors you've turned a corner.

There were some bright spots buried in the report. Net interest income rose 14% and investment banking revenue jumped 38%, reflecting stronger activity in capital markets. The bank also noted it returned more than $17 billion to shareholders in 2025 and expects fiscal 2026 net interest income excluding Markets to grow 5% to 6% year over year.

Rivian Falls on Recall News Despite Stable Production

Rivian Automotive Inc. (RIVN) dropped 7.16% to close at $17.50. The stock's intraday high reached $18.25, with a low of $17.06, and its 52-week range between $10.36 and $22.69.

Rivian shares traded lower as investors weighed news of a recall covering nearly 20,000 vehicles due to a potential crash risk. That's never a good headline for an automaker still working to establish itself in a competitive market.

The recall overshadowed what were otherwise stable production and delivery figures for the fourth quarter. The electric vehicle maker produced about 11,000 vehicles and delivered roughly 10,000 during the period, ending 2025 with production and deliveries closely aligned. That kind of operational consistency matters for a company trying to prove it can scale, but safety recalls have a way of dominating the conversation.

According to market data, Rivian stock currently shows Momentum in the 87th percentile, suggesting technical traders still see some strength in the name despite Wednesday's pullback.