BRK-B vs THO: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: THO is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. BRK-B and THO share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined BRK-B and THO exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Berkshire Hathaway is a diversified holding company that owns a wide range of businesses outright and holds a large portfolio of public stocks. Its foundation is insurance: GEICO, Berkshire Hathaway Reinsurance, and other insurers generate underwriting profit and, more importantly, float (premiums held before claims are paid) that Berkshire invests. In Q1 2026 insurance underwriting income rose to about $1.72 billion from $1.34 billion a year earlier. Beyond insurance, Berkshire owns the BNSF railroad, Berkshire Hathaway Energy, and consumer and industrial businesses such as Duracell, Dairy Queen, See's Candies, and Precision Castparts, alongside a stock portfolio historically anchored by names like Apple and American Express.

Full BRK-B guide

THOR Industries, Inc. builds and wholesales recreational vehicles through a deliberately decentralized group of operating companies. Three reportable segments carry almost all of the revenue. North American Towable covers travel trailers and fifth wheels under Jayco, Keystone, Dutchmen, Heartland, Starcraft, Highland Ridge and Airstream, and produced ~$3.78 billion of fiscal 2025 sales. North American Motorized covers Class A, B and C motorhomes under Thor Motor Coach, Tiffin, Entegra Coach and Airstream's touring coaches, at ~$2.18 billion. The European segment is Erwin Hymer Group, bought in February 2019 for roughly $2.4 billion, which sells motorcaravans, campervans and caravans under Hymer, Dethleffs, Buerstner, Laika, Niesmann und Bischoff, Carado, Sunlight, LMC, Etrusco and Elddis, plus the McRent and rent easy rental networks, and produced ~$3.02 billion. A smaller components and other group supplies parts inside and outside the family. The fiscal year ends July 31, employment runs near ~20,900, and the reported top line is a shipment number sold to independent dealers, not a retail number, which is the single most important thing to hold in mind when reading any quarter.

Full THO guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• BRK-B drivers: Leadership transition to Greg Abel; Insurance float and underwriting.
• THO drivers: Dealer destocking, and where it ends; Motorized and Europe are carrying the top line.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The central 2026 risk is the leadership transition itself: Buffett's judgment and reputation were core to Berkshire's edge, and the market will test whether Greg Abel can allocate capital as effectively, especially with a record cash pile to deploy. For THO, the most immediate risk is that the trough is not a trough.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick BRK-B if you believe its drivers more; THO if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the BRK-B and THO guides.

BRK-B. Figures are approximate and tied to the asOf date; verify live numbers before acting. Because accounting rules force Berkshire to mark its large stock portfolio to market each quarter, GAAP net income is noisy, so investors typically focus on operating earnings and book value per share rather than a simple P/E. The record cash balance means a meaningful part of the market cap is cash awaiting deployment, which affects how the business should be valued.

THO. Trailing earnings of ~$4.95 per share put the stock near ~14.7 times, which looks undemanding until the guidance is substituted: the fiscal 2026 midpoint of ~$3.55 is roughly ~20.5 times, and consensus for the year ahead implies about ~18 times. Against assets the picture inverts, with the shares near ~0.9 times book value of roughly ~$82.79 per share and enterprise value near ~$4.29 billion on ~$9.82 billion of trailing sales. That is the usual shape for a cyclical manufacturer at a low point in the cycle, where the earnings multiple looks worst precisely when earnings are most depressed, and the analyst consensus rating sits at hold with an average target near ~$90.

Headline figures (approximate, Jul 2026): BRK-B shows operating earnings (q1 2026) ~$11.35 billion, up ~18% year over year (approximate; verify live), net earnings (q1 2026) ~$10.1 billion, but volatile due to mark-to-market swings on equities (approximate; verify live), cash and treasurys ~$397 billion at end of Q1 2026, a record (approximate; verify live), market cap ~$1 trillion (BRK-B ~$497 per share in mid-July 2026; approximate; verify live); THO shows revenue (ttm) ~$9.82 billion, up ~2.4%, q3 fy2026 net sales ~$2.78 billion, down ~3.9%, gross margin ~12.8%, q3 fy2026 diluted eps ~$1.86, down ~26.5%, fy2026 guidance sales ~$9.0B to ~$9.5B, diluted EPS ~$3.30 to ~$3.80 (cut from ~$3.75 to ~$4.25).

BRK-B and THO are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined BRK-B and THO exposure against your real portfolio. It is not an investment adviser.