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Wall Street’s best frenemy

Ken Griffin
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Wall Street underestimates Ken Griffin at its peril

News that Ken Griffin’s trading behemoth Citadel Securities — along with asset management giant BlackRock — are part of a group backing a new national stock exchange based in Dallas was largely shrugged off on Wednesday.

After all, other recent efforts to uproot lower Manhattan from its century-long position as the key chokepoint of global capitalism haven’t moved the needle much. Remember IEX? The Long-Term Stock Exchange? Both failed to make much of a dent in the dominant position of the New York Stock Exchange, Nasdaq, and CBOE.

And the $120 million in funding the new exchange, TXSE, was touting is — let’s face it — peanuts when it comes to the expense of building and maintaining the type of trading technology that would be needed to establish a reliable electronic exchange.

But this is missing something important: It’s called Ken Griffin.

The billionaire financier — a hedge-fund manager and market-making and trading technology entrepreneur — poses a unique competitive problem that Wall Street has repeatedly failed to solve in recent years, as his ever-expanding trading empire has been able to lop off larger chunks of business Wall Street once owned. (This is a big part of the reason Griffin is personally now worth more than $40 billion.)

(Disclosure: Sherwood News is an editorially independent subsidiary of Robinhood Markets, Inc. Citadel Securities has a business relationship with Robinhood.)

Making a market

Since Griffin established his market-making unit, Citadel Securities, in 2002, it has grown into a significant — and in some instances, dominant — player in businesses long controlled by Wall Street institutions.

Most of these businesses involve Wall Street’s core competency: matching buyers and sellers for a range of investments, including options, foreign exchange, and corporate and government bonds. Citadel Securities has also kicked in the door of the incredibly profitable interest rate swaps trading business that was long a cherished, and closely guarded, profit center for major Wall Street banks like J.P. Morgan, Goldman Sachs and Bank of America.

How has Griffin and his hand-picked executives been able to do it? Well, over the years, I’ve spoken privately with Wall Street traders and executives who say it has to do with the unique positioning Griffin’s empire has as Wall Street’s best frenemy.

Here’s what they say: While his trading division — he is the founder and largest shareholder in Citadel Securities, though no longer runs it day-to-day — is perhaps Wall Street’s biggest competitor, he is also the CEO of a $60 billion-plus hedge fund known as Citadel Advisors — legally distinct from the Citadel Securities trading arm — which is one of Wall Street’s biggest clients.

Essentially, Wall Street is terminally conflicted about how to respond to Griffin’s competitive incursions.

Executives are reluctant to declare an all-out competitive war with Griffin, for fear of A) losing and B) jeopardizing the lucrative trading commissions and prime brokerage business that his hedge fund throws their way. There’s also a C) wild card, in that in their heart of hearts, many of Wall Street’s elite executives could envision themselves occupying a well-compensated chair at Citadel some day.

Wall Street’s best frenemy

By the way, Citadel Securities could be said to have a similar frenemy position toward stock exchanges. While the company’s principal trading business — which uses its own capital to execute trades off exchanges — is a major competitor with exchanges, Citadel is also a major business partner of the NYSE and has been for a long time.  

Today, Citadel remains the NYSE’s top designated market maker. It has responsibility for managing trading in some 2,000 stocks, or about 65% of listings. That effectively makes Citadel Securities one of the one of the biggest business partners of the venerable stock exchange, which is owned by IntercontinentalExchange.

Political power

The Griffin-related risks don’t stop there for stock exchanges.

While the heavily regulated nature of public stock trading has long served as something of a competitive moat for exchanges, Griffin’s political muscle could help cut through the protective cocoon and red tape of exchanges.

Bottom line? Citadel Securities is already one of the most important nodes of the stock trading business, executing — that is, matching buyers and sellers — 23% of all publicly reported US trades last year.

It’s unclear how serious Citadel Securities is about putting financial or trading firepower behind any upstart stock exchange. (It has backed other exchanges in the past, perhaps most notably the Members Exchange or MEMX, in 2019.)

But by definition, any exchange, even an as-yet nonexistent one like the TXSE, seriously backed by Citadel Securities could be a threat. Wall Street, consider yourself warned.

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Reddit rises after reporting strong Q1 numbers and guidance

Social media platform Reddit climbed late Thursday after guiding for stronger sales in the current quarter and posting Q1 numbers that were better than analysts had expected. Reddit reported:

  • Q1 earnings per share of $1.01 vs. analysts’ expectations of $0.57.

  • Revenue of $663.4 million vs. expectations for $607.7 million.

  • 126.8 million “daily active uniques” vs. the 125.9 million expected.

  • Sales guidance for Q2 2026 of between $715 million and $725 million (midpoint $720 million) vs. analysts’ estimates of $710.9 million.

After surging 40% last year, Reddit has struggled since last September, when it hit a record closing high of $270.71. The stock closed Thursday roughly 45% below that level.

The drop is not so much because the outlook for sales and earnings at the company have weakened dramatically. (In fact, Wall Street analysts have lifted their sales estimates for the next 12 months by about 30% since then, and raised earnings estimates by about 70%.)

It’s that the price-to-earnings multiple on the stock has plunged from over 90x expected earnings over the next 12 months to about 32x, suggesting that sentiment around the stock — which had been something of a favorite for retail traders last year — has ebbed significantly.

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Roblox craters after Q1 daily active users miss estimates while management slashes full-year guidance

The bottom is falling out of Roblox in postmarket trading after the video game company’s Q1 daily active users fell short of estimates and management cut full-year guidance.

For the period ended March 31, the company reported: 

  • Net revenue of $1.44 billion (compared to analyst estimates for $1.42 billion).

  • Daily active users of 132 million (estimate: 143.8 million).

The real pain, though, comes from the reduced full-year outlook, with management lowering their view for sales to between $5.87 billion and $6.14 billion, down from a range of $6.02 billion to $6.29 billion. In other words, the old base case for sales is now their best-case scenario.

The firm also cut its outlook for 2026 bookings (money spent on in-game currency known as Robux) to a range of $7.33 billion to $7.6 billion (previously $8.28 billion to $8.55 billion).

Analysts were way off-side, having expected full-year revenue of $6.6 billion and bookings of $8.4 billion.

The stock hit its lowest level since October 2024 in the after-hours session. It’s been languishing near its 52-week low after halving over the past six months, with analysts wondering whether the kid-focused company has a plan to stay out of legal trouble, monetize, and “age up” in the years ahead. 

Roughly one-third of the video game company’s users are under 13. This month, Roblox announced expanded controls for parents and the rollout of Roblox Kids (for ages 5 to 8) and Roblox Select (for ages 9 to 15) this June. These launches are one part of its multitiered safety plan, which includes third-party biometric scans — something kids have been expertly outsmarting. 

Roblox’s decision to cut its guidance for 2026 was “largely safely-related,” Roblox’s C-suite said on Thursday’s earnings call. As Roblox started age-gating, CFO Naveen Chopra explained, many users lost access to intercommunications on the platform — resulting in a lack of engagement and daily active users, as well as negative App Store reviews (which management also blamed on running annoying ads).

David Baszucki, Roblox CEO:

We have seen a reduction in App Store rating, and we believe this may be contributing to a reduction in organic sign ups that typically flow from app stores.

Naveen Chopra, Roblox CFO:

We do know that the fact that we had more sign up headwinds over the last few months is going to put pressure on bookings over the remainder of the year.

Over the past month, the company has also importantly settled with several states over lawsuits that allege the company failed to implement proper security to protect children from adults on the site, which showed up in the company’s quarterly bill.

The platform paid out $1.5 billion to creators in 2025, and the company overall remains in the red.

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Western Digital slips despite posting strong quarterly results

AI memory play Western Digital posted stronger-than-expected quarterly earnings and sales figures.

Shares of the company, which have run up 131% so far this year, were down 3.6% as the beats weren’t able to satiate investors, a similar situation that played out with its peer Sandisk, which also reported earnings on Thursday afternoon.

Here’s how the results looked:

  • Fiscal Q3 revenue of $3.34 billion vs. the $3.25 billion consensus analyst expectation, per FactSet.

  • Adjusted earnings per share of $2.72 vs. the $2.39 analysts had predicted.

  • Fiscal Q4 guidance for adjusted EPS of $3.10 to $3.40 ($3.25 midpoint) vs. analyst estimates of $2.75.

  • Sales guidance for Q4, which ends in June, of $3.55 billion to $3.75 billion ($3.65 billion midpoint) vs. estimates of $3.46 billion.

A maker of hard disk drives that are suddenly in high demand due to the AI data center build-out, Western Digital — along with Seagate Technology Holdings, Sandisk, and Micron — is a cornerstone of the AI memory trade, which has delivered massive gains over the last year. Western Digital alone is up more than 1,000% over the last 12 months and is one of the top-performing names in the S&P 500 in 2026.

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Sandisk crushes expectations for quarterly EPS and sales, but stock drops anyway

Data storage company Sandisk dropped late Thursday despite reporting much better-than-expected quarterly numbers. The massive beneficiary of the data center boom — the stock topped the S&P 500 last year and is leading it again in 2026 with an astounding year-to-date gain of about 360% — reported:

  • Non-GAAP diluted earnings per share of $23.41 vs. the $14.62 forecast from Wall Street analysts polled by FactSet.

  • Revenue of $5.95 billion vs. a $4.72 billion consensus forecast from FactSet.

  • Non-GAAP EPS guidance for the current quarter, which ends in June, of $30 to $33 vs. Wall Street’s $23.38 expectation.

  • Current-quarter revenue guidance of $7.75 billion to $8.25 billion ($8 billion midpoint) vs. the $6.62 billion analyst forecast.

Shares fell 6% after-hours.

Sandisk was spun off from Western Digital in February 2025, and since then, its AI-driven stock price run-up has been nothing short of spectacular. The stock has risen more than 3,300% over the last 12 months, creating more than $150 billion in market value. When it emerged as a stand-alone company, it was valued at about $5 billion.

Can such a run-up continue? The law of large numbers would suggest not.

Sandisk executives have been adamant that demand for products — to store the massive amounts of data required for and produced by AI — shows no sign of slowing. But the sell-off after the numbers suggests investors who have ridden the shares up are nervous.

markets

Rivian delivers better-than-expected Q1 earnings and revenue

US EV maker Rivian reported its first-quarter results after markets closed on Thursday. The company’s shares whipsawed in after-hours trading.

For Q1, Rivian reported:

  • An adjusted net loss of $0.54 per share, compared to the $0.60 loss per share expected by Wall Street analysts polled by FactSet.

  • $1.38 billion in sales, compared to $1.37 billion expected.

Looking ahead, Rivian maintained its forecast for a full-year adjusted loss in the range of $1.8 billion to $2.1 billion. Wall Street expects a $1.99 billion loss.

Rivian’s primary focus this year will be the commercial launch of its new, smaller R2 SUV.

Earlier this month, Rivian reaffirmed its full-year delivery guidance of 62,000 to 67,000 vehicles. Analysts polled by FactSet expect 17,200 of those to be R2s, while Rivian has implied annual R2 deliveries of between 20,000 and 25,000 units. In March, Rivian announced that the R2 price would start at $59,485 at launch. The company reportedly began deliveries of the first R2s to employees this month.

Rivian also announced a robotaxi partnership with Uber in the first quarter. Uber will invest up to $1.25 billion in the EV maker in a deal for 50,000 robotaxis.

This week, a regulatory filing revealed that Rivian CEO RJ Scaringe earned $402.6 million in 2025 — more than 7x the combined pay for GM CEO Mary Barra and Ford CEO Jim Farley.

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