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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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Commerce Department tweaks export rules, paving the way for Nvidia to ship H200s to China

US President Donald Trump’s call for Nvidia and its peers to be able to sell advanced AI chips to Chinese customers has evolved from the realm of social media posts to official policy paperwork.

The Department of Commerce’s Bureau of Industry and Security revised its export license review policy for certain semiconductors, laying out what kinds of chips Nvidia and other semi companies will be allowed to ship to China and the terms of this arrangement.

For chips with a total processing power of less than 21,000 and a DRAM bandwidth of less than 6,500 gigabytes per second, a group which includes Nvidia’s H200 as well as AMD’s MI325X, “this final rule specifies certain conditions that, if satisfied, allow for license applicants to move from a presumption of denial to a case-by-case license review policy for exports from the United States destined to China or Macau.”

Two of the key stipulations include:

  • These products must be readily available in the US for those who want to buy them; and

  • Aggregate shipments of these chips to China and Macau can’t exceed 50% of their total end use by US customers.

H200s are the most advanced chips from the Hopper line, which was Nvidia’s leading offering prior to Blackwell.

While Trump’s Truth Social post on December 8 indicated that 25% of the proceeds from sales of these chips to China would go to the US government, there is no reference to such a provision in this particular document.

Chinese buyers have reportedly put in orders for more than 2 million H200s, making this a potential $54 billion sales channel for the world’s most valuable company.

However, the willingness of Chinese officials to allow that many processors to be imported at a time when they’re also focused on developing their domestic chip capabilities remains an open question.

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Netflix reportedly considering making its $83 billion Warner Bros. offer all cash

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The news of Netflix’s potential change comes a day after Paramount Skydance announced it sued WBD for more information on its deal with Netflix.

Paramount has not improved its $30-per-share offer for Warner Bros., despite the latter’s board rejecting it twice.

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Paramount has not improved its $30-per-share offer for Warner Bros., despite the latter’s board rejecting it twice.

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Moderna rallies after projecting better-than-expected 2025 sales

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Roblox surges as a new brainrot game climbs the engagement charts

A game that has players grab “brainrots” like “Aura Farma” and “Rainbow 67” and run away with Tsunamis is climbing the Roblox engagement charts and getting the attention of Wall Street analysts.

Morgan Stanley on Tuesday lowered its price target for Roblox from $170 to $155, but said that the platform’s risks are fully discounted and that it should continue to benefit from hit games. On Monday, BMO Capital directly cited the emergence of one such hit: “Escape Tsunami For Brainrots!”

That title, a top 5 experience on the gaming platform according to engagement tracking service RoMonitor, averaged more than 40 million visits from Saturday to Monday. Less than a month old, the game has landed just in time, emerging after analysts last month warned that 2025 viral hits like “Grow a Garden” and “Steal a Brainrot” (yes, it’s different) are past their peaks.

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