BRK.B · Berkshire Hathaway Inc.

The thesis

Berkshire Hathaway is spending its cash under chief executive Greg Abel, on its own shares and on new stock positions, but the shares still trail the S&P 500. The third-quarter report expected around 7 November 2026 decides the case. It shows whether buybacks kept the second-quarter pace and whether insurance profits stopped shrinking.

The shares have firmed since the last update. The class B shares closed at $511.05 on 8 October 2026, against $497.95 on 30 September 2026. That leaves them 3.5% below their 52-week high of $529.42, with a 2.9% gain over three months on adjusted daily closes.

The narrative is maturing: the capital-deployment story has been widely known since the 8 August 2026 second-quarter report, and the only fresh news since is a 5 October 2026 SEC Form 4 showing more Lennar buying. Ad-hoc-news reported on 13 September 2026 that the shares were about 10 percentage points behind the S&P 500 for the year. The recent rise is too small to show that gap closing.

Bullish and bearish views on Berkshire Hathaway Inc.

The bull case on Berkshire Hathaway Inc. (BRK.B), in brief: Manufacturing, service and retailing rose 24% to $4.47 billion, Berkshire Hathaway Energy rose 27% to $891 million, and BNSF railroad rose 6% to $1.56 billion. The bear case: Insurance underwriting is weakening.

Bull case

• Manufacturing, service and retailing rose 24% to $4.47 billion, Berkshire Hathaway Energy rose 27% to $891 million, and BNSF railroad rose 6% to $1.56 billion.
• Buybacks have resumed at scale. Repurchases rose from $235 million in the first quarter to about $4.5 billion in the second (CNBC, 8 August 2026). Kingswell's review of the second-quarter filing put early third-quarter repurchases at about $3.5 billion in the first four weeks of the quarter.
• Cash is going to work. Net stock purchases came to nearly $20 billion in the second quarter, the first net buying after 14 straight quarters of net selling (CNBC, 8 August 2026). Cash and Treasury bills fell to $365.5 billion on 30 June 2026 from a record $397.4 billion on 31 March 2026.
• The Lennar stake keeps growing. A Form 4 filed with the SEC on 5 October 2026 showed Berkshire bought more Lennar shares on 1 October 2026 and 2 October 2026, taking its holding to 28,438,045 class A shares (Kalkine Media). CNBC had put the stake at about 25.9 million shares on 26 September 2026.
• One analyst sees room above the price. UBS raised its target from $585 to $604 on 10 August 2026 and kept a Buy rating.

Bear case

• Insurance underwriting is weakening. Kingswell's review of the second-quarter 2026 filing shows underwriting earnings down 13.1% from a year earlier. GEICO's underwriting profit fell 45.4% to $994 million, with a combined ratio of 91.2%.
• Headline growth flatters the trend. Kingswell calculates that second-quarter operating earnings grew 16.3% but only 5.2% once foreign-exchange swings are excluded.
• Persistent underperformance. Ad-hoc-news reported on 13 September 2026 that the shares were about 10 percentage points behind the S&P 500 for the year. The 2.9% three-month gain to 8 October 2026 is modest against that gap.
• Leadership is still settling. News coverage of a 18 September 2026 company announcement reported that Warren Buffett became chairman emeritus and Howard G. Buffett was elected chairman. Greg Abel's capital-allocation record covers only two full quarters, and Charles C. Chang became chief financial officer on 1 June 2026.
• Thin analyst coverage. Few brokers publish targets on the shares, so a single firm's change moves the published averages.

Price setup

The class B shares closed at $511.05 on 8 October 2026, 3.5% under their 52-week high of $529.42. The 14-day Relative Strength Index (RSI), a momentum gauge running from 0 to 100, stood at 51.8, a neutral reading. The shares are neither stretched nor oversold.

The $475 level sits about 10% under the 52-week high. A close below it would mean the shares fell back despite active buybacks. The $529.42 high is the overhead reference; a close above it would put the shares at a new 52-week high.

Crowding is light. There is no sign of heavy retail attention, the momentum reading is neutral, and the company itself is the main buyer of its shares. The next report is about four weeks away.

Catalysts, next 30 days

• ~7 November 2026, est.: third-quarter 2026 earnings release and 10-Q. Berkshire usually releases results on a Saturday morning, so trading reacts on Monday, ~9 November 2026. The report shows third-quarter buyback dollars, cash on 30 September 2026, GEICO's combined ratio and net stock buying.
• ~16 November 2026, est.: third-quarter 13F holdings filing. Falls just outside the 30-day window. It lists the stock portfolio on 30 September 2026, including the size of the Lennar and other new stakes.

What would change the view

The case breaks if the third-quarter report shows repurchases falling back toward the first-quarter level of $235 million. That would mean the second-quarter buybacks were a one-off. A second quarter of falling GEICO underwriting profit, with a combined ratio above the second quarter's 91.2%, would also weaken it. So would a return to net stock selling.

On price, a daily close below $475 ends the thesis. That level is more than 10% under the $529.42 52-week high.

The case would strengthen if third-quarter repurchases match or exceed the second quarter's $4.5 billion and GEICO margins hold. A close above $529.42 after the report would show the market rewarding that.

What it trades with

Berkshire's earnings come from insurance, the BNSF railroad, utilities and energy, and industrial and retail businesses, plus a large stock portfolio. The shares tend to follow US insurers, railroads and broad value stocks more than the technology-led S&P 500. Lower short-term interest rates cut income on the Treasury bill balance, which stood at part of the $365.5 billion cash and Treasury total on 30 June 2026.