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Thursday, November 5, 2026Nov 5, 2026 · morning edition

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California's billionaire wealth tax trails after Election Day

Proposition 40's one-time 5% tax on billionaires was down more than 10 points as ballots were still being counted, while a rival measure that would block such taxes was ahead.

Signal feed

8 moves
Sergey BrinPolicyAI & techPrivateAI read · — Bearish for the tax, bullish for Brin

Billionaire tax trails as Brin-backed rival leads

The move

California's Proposition 40, a one-time 5% tax on net worth above $1 billion for state residents as of Jan. 1, 2026, was trailing 55.27% to 44.73% with 61% of votes counted as of a Nov. 4 update, CalMatters reported. A rival measure, Proposition 42, which would bar the state from taxing financial assets or private businesses, was ahead with about 54% support. Under California's rules, when competing measures are on the same ballot, the one with the most votes wins and nullifies the others, so a win for Prop. 42 would void Prop. 40 even if Prop. 40 also passed. Sergey Brin led the opposition, donating $102 million to the committee Building a Better California, which he founded, and relocated his residency out of state.

Why it matters

If the trend holds, California's roughly 200 billionaires avoid a wealth-tax bill that supporters said could raise tens of billions of dollars for healthcare and education.

The bear case

Only 61% of ballots were counted as of the last update, and the union behind Prop. 40 has said it may put the measure back on the ballot in 2028.

What to watch

California's certified final vote count, expected in the coming weeks.

Warren BuffettInvestmentFinanceSIRIAI read · ▲ Buffett adds to a favorite bet

Berkshire keeps buying SiriusXM stock

The move

Berkshire Hathaway bought 924,281 more shares of Sirius XM Holdings (SIRI) over three trading days — 743,965 on Oct. 30, 66,968 on Nov. 2 and 113,348 on Nov. 3 — at weighted-average prices from $28.89 to $30.23, an SEC Form 4 shows. The purchases bring Berkshire's stake to 125,731,398 shares, held through GEICO and Berkshire subsidiaries' pension plans.

Why it matters

Berkshire has been one of SiriusXM's largest and steadiest buyers since the Liberty Media tracking-stock split, and each purchase adds to an already large position.

The bear case

SiriusXM has lost subscribers in recent years, so a bigger stake also means bigger exposure if that trend continues.

What to watch

Berkshire's next Form 4 filings and its Q3 2026 earnings, expected this month.

Source · SEC Form 4 (Berkshire Hathaway / Warren E. Buffett)Read original ↗Report an error
Warren BuffettDivestitureFinanceDVAAI read · ▼ A routine cap-driven sale

Berkshire trims its DaVita stake again

The move

Berkshire Hathaway sold 382,563 shares of DaVita (DVA) on Oct. 27 at a weighted-average price of $180.43, an SEC Form 4 shows, leaving it with 28,314,666 shares held through GEICO and Berkshire subsidiaries' pension plans.

Why it matters

Berkshire's long-standing agreement with DaVita caps its ownership percentage; when DaVita's own buybacks push Berkshire's stake above that ceiling, Berkshire has to sell shares back down.

The bear case

The sales are mechanical rather than a signal Berkshire has soured on the stock.

What to watch

Whether Berkshire's next Form 4 shows another trim as DaVita keeps buying back shares.

Source · SEC Form 4 (Berkshire Hathaway / Warren E. Buffett)Read original ↗Report an error
Carlos Slim Helu & familyDivestitureEnergyTALOAI read · ▼ Trimming into an oil-stock rally

Carlos Slim keeps selling Talos Energy stock

The move

Control Empresarial de Capitales, Carlos Slim's family holding company, sold 1,508,586 shares of Talos Energy (TALO) on Oct. 27 and Oct. 28 at weighted-average prices of $18.50 and $18.33, an SEC Form 4 shows, leaving it with 20,491,414 shares.

Why it matters

Slim's investment vehicle has trimmed its Talos stake several times in 2026 as oil-linked stocks have rallied this year.

The bear case

Slim remains one of Talos's largest shareholders even after the sales, so this looks like profit-taking rather than an exit.

What to watch

Further Form 4 filings from Control Empresarial de Capitales if oil prices keep climbing.

Source · SEC Form 4 (Control Empresarial de Capitales)Read original ↗Report an error
Andreas von Bechtolsheim & familyInsider tradeAI & techANETAI read · ▼ Routine, pre-scheduled selling

Arista's Bechtolsheim sells more stock on a 10b5-1 plan

The move

Andreas Bechtolsheim sold 267,892 shares of Arista Networks (ANET) on Oct. 30 across eight trades, at weighted-average prices from $167.51 to $174.14, an SEC Form 4 shows. The sales were made under a trading plan he adopted on Feb. 20, 2026, leaving him with 180,275,156 shares held indirectly through a trust.

Why it matters

10b5-1 plans let insiders schedule sales months in advance, so the timing doesn't necessarily reflect a view on the stock today.

The bear case

Even routine, pre-scheduled selling by a company's largest insiders can weigh on sentiment if it continues for months.

What to watch

Further sales under the same plan.

Source · SEC Form 4 (Andreas Bechtolsheim)Read original ↗Report an error
Tobias LütkeEarningsAI & techSHOPAI read · ▼ Growth strong, reaction mixed

Shopify's revenue jumps 32%, but shares slip

The move

Shopify reported third-quarter revenue of $3.742 billion, up 32% year over year, with gross merchandise volume up 29% to $119.1 billion and operating income up 66% to $568 million, the company said in its Nov. 3 earnings release. Free cash flow margin improved to 22% from 18% a year earlier. For the fourth quarter, Shopify guided to revenue growth in the "low-thirties percentage rate" year over year, a touch below the third quarter's own pace.

Why it matters

Investors often weigh Shopify's growth against its margin trajectory and next-quarter guidance rather than the headline revenue beat alone.

The bear case

A small deceleration in guided growth can still outweigh a strong quarter if a stock was priced for continued acceleration.

What to watch

Shopify's actual fourth-quarter results, expected in February, against the "low-thirties" guidance.

Source · Shopify Q3 2026 earnings releaseRead original ↗Report an error
Charles Koch & familyEarningsOtherIBTAAI read · ▲ Another beat for an under-the-radar holding

Ibotta tops guidance again as Koch holds a stake

The move

Ibotta reported third-quarter revenue of $97.8 million, up 17% year over year and above the top of its $94-$98 million guidance range, with adjusted EBITDA of $23.8 million, a 24.3% margin, the company said in its Nov. 2 earnings release. Koch, Inc., the holding company run by Charles Koch, has reported owning 4,389,129 Ibotta Class A shares worth about $149.9 million as of its most recent 13F filing.

Why it matters

The beat shows one of Koch's public-market stock bets still performing well, even though a move this size in a small-cap barely registers for Koch's overall portfolio.

The bear case

Ibotta's own fourth-quarter guidance of $94-$98 million revenue is only modestly above Q3's actual result, suggesting growth may be leveling off.

What to watch

Koch, Inc.'s next 13F-HR, due around mid-November, for whether it kept or trimmed the Ibotta stake.

Source · Ibotta Q3 2026 earnings releaseRead original ↗Report an error
Ma HuatengEarningsAI & techRDDTAI read · ▲ Strong quarter for a Tencent-linked holding

Reddit's revenue jumps 53% as Tencent holds a stake

The move

Reddit reported third-quarter revenue of $895 million, up 53% year over year, with net income of $283 million and adjusted EBITDA of $402 million, a 45% margin, the company said in its Oct. 29 earnings release. Daily active uniques rose 12% to 130.3 million. Tencent subsidiaries have disclosed owning about 9.98% of Reddit's Class A shares, a stake for which Reddit CEO Steve Huffman holds the voting proxy, per a February 2025 SEC filing.

Why it matters

The results show continued ad-revenue growth even as Reddit faces outside questions about AI-driven traffic to its site.

The bear case

U.S. daily active uniques fell 2% year over year even as international usage grew, pointing to uneven growth beneath the headline number.

What to watch

Whether U.S. usage stabilizes in the fourth quarter.

Source · Reddit Q3 2026 earnings releaseRead original ↗Report an error

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