OPLN vs RBA: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 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.

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. OPLN and RBA 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 OPLN and RBA 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.

OPENLANE runs the wholesale layer of the used-car business, the market where dealers, rental fleets, leasing companies and captive lenders sell vehicles to other dealers rather than to consumers. It was KAR Auction Services until a 2023 rename, and it sold its US physical auction sites (the ADESA locations) to Carvana in 2022, leaving a business that is digital in North America and part physical in Europe. Two segments do the work. Marketplace lists and sells the cars, earning auction and related fees, SaaS and services revenue, and a small amount of outright vehicle resale. Finance is AFC, a floorplan lender extending short-term inventory-secured credit to independent dealers so they can buy at auction. In the June 2026 quarter Marketplace booked ~$447.3M of revenue against Finance's ~$107.3M, yet Finance carried the larger operating profit, ~$38.6M versus ~$28.9M.

Full OPLN guide

RB Global (NYSE and TSX: RBA) operates commercial marketplaces where sellers list assets and buyers bid, mostly online. The heritage business is Ritchie Bros., the unreserved industrial auctioneer for excavators, dozers, cranes, trucks and trailers, joined by IronPlanet, Marketplace-E, Rouse, SmartEquip and Ritchie List. The other half arrived with the roughly $7.3 billion acquisition of IAA in March 2023, which added the salvage vehicle auction network that insurers use to dispose of total-loss cars. In March 2026 the company agreed to buy BigIron, an agriculture-focused online marketplace handling roughly $885 million of gross transaction value across farm equipment, land and livestock, and that deal has since closed. Starting in the second quarter of 2026 the company reports three sectors: Automotive, Heavy Equipment and Transportation (HE&T, which absorbed the former Commercial, Construction and Transportation sector), and Other.

Full RBA guide

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

• OPLN drivers: The off-lease inflection in commercial consignment; US dealer-to-dealer share gains.
• RBA drivers: Automotive and the salvage flywheel; Heavy equipment supply and the replacement cycle.

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 commercial volume surge leaned partly on onboarding a single new private-label customer, so concentration matters and a lost contract would show up quickly in reported units. For RBA, the clearest pressure point is the mix between bought growth and earned growth: excluding recent acquisitions, total GTV rose 7% in the second quarter of 2026 rather than 11%, and HE&T organic transaction volumes declined.

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 OPLN if you believe its drivers more; RBA 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 OPLN and RBA guides.

OPLN. Trailing GAAP EPS of about -$0.59 is misleading on its own: consolidated net income over the last four quarters was roughly $200M, and the negative figure comes from a ~$242.2M premium recorded in Q4 2025 when the Series A convertible preferred was repurchased for ~$559.3M. Guided 2026 diluted EPS of ~$1.23 to ~$1.33 puts the stock near ~26x the midpoint, or closer to ~23x on the company's Operating Adjusted EPS range of ~$1.40 to ~$1.50. The enterprise-value multiple excludes AFC's ~$1.89B of obligations collateralized by finance receivables, which are secured by ~$2.62B of managed receivables and are conventionally treated as funding rather than corporate debt.

RBA. Full-year 2026 guidance was raised to 9% to 11% GTV growth and $1.495 billion to $1.545 billion of adjusted EBITDA, with capital expenditures of $350 million to $400 million and a 23% to 25% tax rate. The gap between the trailing multiple near 41 times and the forward multiple near 21 times reflects heavy amortization of acquired IAA intangibles running through GAAP earnings. Net debt of roughly $4.2 billion is the other number that matters, because it sets how much of the cash flow is committed before buybacks and dividends.

Headline figures (approximate, August 2026): OPLN shows revenue (ttm) ~$2.08B, q2 2026 revenue ~$554.6M, up ~15% year over year, q2 2026 net income / adjusted ebitda ~$44.3M / ~$103M, 2026 company guidance adjusted EBITDA ~$385M to ~$400M; diluted EPS ~$1.23 to ~$1.33; RBA shows revenue (ttm) ~$4.85B, q2 2026 gtv ~$4.67B, up ~11% y/y (take rate 20.0%, down ~110bps), q2 2026 adjusted ebitda ~$387M, up ~6% y/y, q2 2026 eps ~$0.71 GAAP diluted, ~$1.13 adjusted.

OPLN and RBA 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 OPLN and RBA exposure against your real portfolio. It is not an investment adviser.