TMC Stock Plunges 10% in Holiday-Thin Trading: Analysts Brace for Monday’s Big Move

TMC stock just took a 10% nosedive. The culprit? A classic holiday trading session—thin volumes, big swings, and a market that's basically running on autopilot until the new year.

Why the Drop Feels Artificial

Let's be real—a double-digit percentage move on a day when half the Street is already on vacation screams 'liquidity vacuum.' It's less about a fundamental breakdown and more about a handful of trades getting amplified in an empty room. The real story won't be written until Monday, when the big players are back at their desks with fresh coffee and full order books.

The Monday Morning Quarterbacking Begins

Analysts are already positioning. Some see this as a classic overreaction—a gift-wrapped buying opportunity for those with the stomach to ignore the holiday noise. Others are more cautious, warning that thin trading can sometimes reveal underlying weakness that gets masked during normal volume. The consensus? Monday's open will be the true litmus test. Will the dip get bought, or is this the start of a deeper correction? (It's the financial equivalent of waiting to see if your drunk text gets a reply.)

The Bigger Picture: Volatility as the Only Constant

This kind of action is a stark reminder. In today's markets, whether traditional equities or digital assets, low liquidity is a volatility magnet. It creates windows where price discovery gets distorted—sometimes offering opportunity, other times hiding risk. For the savvy, it's a landscape to navigate with extreme care, not a casino to gamble in. After all, trying to time a bounce in a holiday market is like trying to catch a falling knife while wearing oven mitts—possible, but you're probably going to get hurt.

So, mark your calendars for Monday. That's when the narrative gets rewritten, and we'll see if this 10% drop was a blip or the beginning of a trend. Until then, consider this a masterclass in why trading during the holidays is often best left to the algorithms and the foolhardy.

TLDRs;

• Holiday-thin trading magnified TMC’s drop, causing a sharp 10% decline without a new operational catalyst.
• NOAA deep-sea mining hearings and public comment period are key near-term catalysts for TMC stock movement.
• Analysts see moderate upside for TMC, but wide price target ranges reflect regulatory and operational uncertainties.
• High short interest, active options, and metals market risks make TMC prone to sudden, volatile price swings.

TMC Inc. (NASDAQ: TMC), a metals and critical-minerals company, saw its shares tumble 10.5% on Friday, Dec. 26, in a holiday-thin trading session that amplified volatility.

The stock ended the day at $6.82 after swinging between $6.61 and $7.68, before ticking slightly higher to around $6.90 in extended trading. Trading volume surged to 11.5 million shares, well above the usual levels for year-end sessions.

As markets remain closed for the weekend, investors are looking to Monday for potential catalysts, particularly regulatory developments surrounding deep-sea mining and analyst guidance.

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Holiday Trading Exacerbates Swings

Friday’s selloff did not stem from a single operational update. Rather, it reflected the market’s sensitivity to thin liquidity and seasonal dynamics.

Analysts have noted that low-volume periods often exaggerate swings, particularly in high-volatility stocks like TMC. Earlier in the week, TMC closed at $7.62 on Wednesday as investors reacted to perceived progress on deep-sea mining reviews, only to see those gains erased by Friday’s retreat.

“The two-step of pop on narrative and drop on positioning is not unusual for TMC,” said one market strategist. Investors treat the stock as an event-driven trade rather than a set-and-forget investment.

Regulatory Timeline in Focus

The most concrete near-term catalyst for TMC is the U.S. regulatory pathway for deep-sea mining. NOAA’s public comment period runs from Dec. 23, 2025, to Feb. 23, 2026, with VIRTUAL hearings scheduled for Jan. 27–28, 2026.

Registration for the hearings closes on Jan. 21. The timeline provides investors with a structured set of milestones that could trigger both bullish and bearish reactions depending on outcomes and media coverage.

Analysts See Upside, But Risks Remain

Wall Street analysts remain cautiously optimistic on TMC. MarketBeat shows a 12-month average target of $7.42, implying roughly 8.75% upside from current levels, while TipRanks lists an average target of $8.33, labeling the stock a “Strong Buy.”

However, target ranges are wide, from $3.75 to $11, highlighting the stock’s dependence on regulatory approvals, commodity cycles, and financing conditions.

Investors are reminded that TMC is a “path-dependent” stock: price swings will closely follow developments in permits, technology execution, and broader macroeconomic trends.

Options, Shorts, and Macro Drivers

TMC’s trading dynamics are amplified by significant short interest, elevated call activity, and its pre-revenue status. As of mid-December, about 9.44% of TMC’s float was sold short, leaving 2.9 days to cover.

Combined with year-end positioning and macro volatility, these factors make TMC a stock prone to sudden gaps up or down.

The broader metals market provides both tailwinds and caution. Copper prices recently reached record levels, yet economists warn of potential demand weakness in China in 2026. TMC, tied to future metal supply rather than current production, sits at the intersection of these risks