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Move over Tesla, UnitedHealth is the battleground stock for retail traders this week as options trading explodes

UNH was the most-discussed ticker on r/wallstreetbets in the last week — and data from Robinhood suggests traders are mostly buyers.

Retail darlings like Palantir Technologies, Nvidia, and Tesla have had to make way for a new battleground stock on popular investing forums in the last week: embattled stock UnitedHealth.

After the shooting of its CEO last year, America’s largest healthcare insurance provider, UnitedHealth, has been under increased scrutiny — becoming a lightning rod for anger and debate over America’s healthcare system.

Now, the company’s sickly stock itself has become a flashpoint.

After plummeting by 50% between April 16 and May 16, UNH has attracted a legion of traders looking to profit from the wild swings in what used to be one of America’s most boring, stable companies, with data from SwaggyStocks — which tracks sentiment on sites like Reddit’s r/wallstreetbets — revealing that its the most-discussed ticker on the forum over the last seven days.

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Risk factors

Since reporting weak earnings in mid-April, UNH’s stock has been under pressure. On May 13, the company suspended its guidance, the same day CEO Andrew Witty abruptly stepped down for personal reasons, contributing to shares dropping another 18% in one day.

Some retail traders have taken swings at catching the falling knife by “buying the dip.” Those that did so post-Witty exit were burned just days later on May 15, when The Wall Street Journal reported that UnitedHealth was under investigation for possible Medicare fraud, triggering another 11% fall in the company’s equity. On that day there were more than 3,700 mentions of UNH on Reddit’s infamous investing forum, per data tracked by SwaggyStocks.

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So, why has UNH grabbed retail traders’ attention?

The simplest answer is that it’s been super volatile, and traders with short-term investing horizons like the opportunity that volatility brings, even if it also means a lot of risk. Data from Bloomberg confirms that a lot of action has spilled over into the options markets, with put and call volumes spiking 820% in the five days leading up to May 19, relative to the previous week of trading.

But, of course, plenty of stocks are volatile, so why has UNH captured the retail zeitgeist so strongly?

One explanation might be that UnitedHealth’s business — or perhaps more accurately, criticisms thereof — is increasingly prominent in internet culture, and therefore the minds of retail traders. Luigi Mangione, the prime suspect in the killing of UnitedHealth’s CEO Brian Thompson, has become something of a folk hero for people railing against corporate greed and America’s health system.

Could it be that Main Street investors have decided to put their money where their mouth is, betting against the American healthcare machine?

It’s a nice theory, but it doesn’t seem to quite add up. Options volumes jumped modestly around the time of Brian Thompson’s murder, and on Luigi Mangione’s subsequent arrest five days later in December of last year, but they didn’t do anything like what we’ve seen in the last week when the UNH price action was much more extreme. If this were a counterculture “Main Street vs. Wall Street” moment, it feels like the most plausible time for it to have happened would have been four to five months ago.

Furthermore, while it’s true that bets against the company have risen, so have bullish trades. Indeed, the put/call volume ratio for the last five days of trading is just 0.68 — a fairly unremarkable figure that means traders are still buying more calls than puts.

Data from Robinhood all but kills the idea that the spike in trading is politically motivated, with Robinhood’s tracking of retail traders revealing that they have mostly been bullish on UNH stock. Customers have been net buyers in each of the last 10 trading sessions.

(Sherwood Media is an editorially independent subsidiary of Robinhood Markets Inc.)

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A spate of large insider buys — most notably by the company’s new CEO, Stephen Hemsley, who reportedly spent $25 million acquiring UNH shares — helped to turn the stock around on Monday.

More likely, then, it seems that UNH was simply a candidate for old-fashioned dip-buying: an historically stable, (now) well-known company that’s hit a rough patch. Of course, the dip can always resume dipping.

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Report: US senators plan to introduce bill blocking Nvidia from selling advanced chips to China for 30 months

US senators are on the verge of introducing a bill that would block Nvidia from selling its H200 or Blackwell chips to China for 30 months, the Financial Times reports. The H200 is Nvidia’s best chip from the Hopper generation, while the Blackwell line is its current flagship offering.

Shares of the chip designer are little changed in the wake of this report, still up more than 1% on the session. The reaction makes sense, seeing as previous positive indications on Nvidia’s ability to sell advanced chips to China failed to inspire much positive momentum in its shares.

The stock got a short-lived jolt higher (that didn’t last the day!) on November 21 after Bloomberg reported that the Trump administration had discussed the possibility of selling its H200 chips to China.

Nvidia has effectively been shut out of China’s AI market in 2025. First, export restrictions meant it could no longer sell the H20, a nerfed version of its Hopper chip, to the world’s second-largest economy. After that export ban was lifted, demand from China “never materialized,” per Nvidia CFO Colette Kress. Reports indicate that China banned its leading technology giants from purchasing these semiconductors, instead pushing them toward domestic alternatives.

President Donald Trump had mused about allowing Nvidia to sell Blackwell chips to China prior to his meeting with Chinese President Xi in late October, but failed to do so. The two leaders did not discuss the topic at that time.

Per the FT, this upcoming bill would be a bipartisan effort, being cosponsored by the leading Republican and Democrat members of the Senate Foreign Relations East Asia subcommittee.

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AI energy plays soar on an explosion of call buying

Like their quantum computing counterparts, AI-linked energy plays are benefiting from an explosion of bullish options activity on Thursday.

  • Oklo is up double digits with call volumes above 106,000 as of 2:46 p.m. ET, more than double its 20-day average for a full session, with a put/call ratio of about 0.6. Call options with a strike price of $110 that expire this Friday (which are now in-the-money thanks to today’s surge) are seeing the most activity.

  • Nuscale, another nuclear energy play, has seen nearly 140,000 call options change hands versus a 20-day average of 51,073.

  • And fuel cell company Bloom Energy has traded nearly 80,000 calls, roughly twice its 20-day average, with a put/call ratio of about 0.3.

During his appearance on Joe Rogan’s podcast released on Wednesday, Nvidia CEO Jensen Huang talked up the potential for nuclear energy, saying, “In the next six to seven years I think you are going to see a whole bunch of small nuclear reactors.”

This adds to the evidence that the speculative bid is back in a big way after smaller stocks tied to the AI boom and quantum computing cratered from mid-October through most of November as credit risk began to seep into the AI trade.

Old electronic items tossed on ground for disposal, Hudson

Technology giants don’t look like they used to, as the asset-light era fades

Oracle and Meta are now some of the most capital-intensive businesses in the S&P 500, spending more than energy giants. I guess data really is the new oil?

markets

Space stocks rip amid speculation on Altman joining race

Space stocks AST SpaceMobile, Planet Labs, and Rocket Lab all soared Thursday amid a recovery in the high-beta momentum class of shares coveted by some retail traders.

(High-beta momo stocks are basically shares that have been on a winning streak for a while, and tend to go up a lot more than the overall market on positive days. Goldman Sachs includes all three of the aforementioned space stocks in its themed basket of such shares.)

There’s little other fundamental news out there on the companies themselves.

But a Wall Street Journal report that OpenAI impresario Sam Altman has been toying with the idea of entering the space industry, potentially standing up a rival to Tesla CEO Elon Musk’s Starlink satellite service, may also be contributing.

As we’ve mentioned elsewhere, sometimes these stocks seem to trade on a what’s-bad-for-the-Musk-empire-is-good-for-us-and-vice-versa vibe.

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