Investors casting around for alternative assets might consider a handbag. A study by vintage handbag retailer FashioNica found that the Hermès Mini Kelly II bag gained 302 per cent between 2022 and early 2026, dwarfing the S&P 500’s return of 43 per cent over the same period. The larger Birkin bag also outperformed the benchmark, rising 285 per cent. Over the longer term, the numbers are equally striking: between 1980 and 2015, Birkin bags delivered an annual return of 14.2 per cent, compared with the S&P 500’s 9.8 per cent, according to separate research cited by MoneyWeek.
Investment performance: the mini bag phenomenon
The Mini Kelly II has become the star of the secondary market. Reintroduced in 2016, the bag is prized for its rarity; appraisal prices in 2025 can exceed 3 million yen depending on condition and material. Hermès’ overall resale value retention has also strengthened: according to Rebag’s Clair report, the brand reclaimed the top spot in 2025 with an average of 138 per cent value retention, a 38 per cent year-on-year improvement.
The trend extends beyond the Mini Kelly. The Birkin 20 — launched in 2019 and modelled on Hermès’ flagship Paris boutique — has evolved, according to Sotheby’s expert Aurelie Vassy, from a conceptual design into one of the most sought-after mini handbags in the collector market. Sotheby’s has sold over $5 million worth of Birkin 20 examples since 2022. Collectors are now anticipating a standard leather version of the Birkin 20, which Vassy says “would probably become one of the most in-demand bags in the Hermès line-up”.
Market pressures: moderation and competition
Despite these stellar returns, the market is not immune to broader pressures. Hermès’ leather-goods division — which includes the Birkin and Kelly — grew 9.4 per cent in the last quarter, but the label’s ready-to-wear range was flat. As Carol Ryan, writing in The Wall Street Journal, observed, “the halo effect of the Birkin doesn’t make Hermès completely immune from a slowdown, it just buys the company more time than its rivals”.
The premium that Birkin and Kelly bags command on the secondary market has moderated from its peak in 2022, according to Andrea Felsted on Bloomberg. The volume of these bags on the US secondary market has tripled since 2020, analysts at Swiss bank UBS note — a trend that suggests demand has softened relative to supply. Competition is also intensifying: Chanel, under its new creative director Matthieu Blazy, has “caused a frenzy” with its handbags, while LVMH’s Dior continues to roll out new products. Still, the bags retain a premium over their retail prices, meaning they remain a store of value even as the market cools.
Factors that determine a handbag’s value
For collectors, understanding what drives resale value is essential. Several features determine a bag’s worth: the material, colour, vintage, rarity, whether it is a limited edition, current fashion trends and the overall condition. Mini bags made from exotic skins — such as Niloticus Crocodile or Matte Alligator — are especially sought after. Sotheby’s, for example, currently lists a Beton Matte Mississippiensis Alligator Birkin 25 with gold hardware from 2023 at $98,000. At Heritage Auctions’ spring sale last month, a Matte Vert D’eau Alligator Mini Kelly sold for $41,250, including the buyer’s premium.
Colour also plays a critical role. New seasonal colours command large premiums in the first year after release, Vassy explains, because “demand is high and supply remains limited”. Selling into the resale market during that window can be advantageous, especially if the style is bold and has attracted collector attention. Limited editions are another driver: in March 2025, a limited-edition Day Faubourg Birkin fetched $152,400 at Sotheby’s in New York, slightly above its high pre-sale estimate. Rarity can also be found in discontinued styles — such as the original Birkin owned by Jane Birkin, which sold for a record $10.1 million, or the rare Hermès Ombre Birkin made from Varanus salvator lizard, valued at up to $120,000.
Condition and provenance are paramount. Bags that retain their original packaging, documentation and authentication paperwork fetch significantly higher prices. As Vassy notes, the mark of a good collection is not size but curation. “As collectors become more experienced, many begin to focus less on what is newly available and more on what is increasingly difficult to find,” she says. “This is often the point at which a Birkin collection shifts from boutique buying to true collecting.”
