Main Street Research Dumps 15,000 MercadoLibre Shares for $37 Million

Main Street Research fully liquidated its entire MercadoLibre (MELI) holding in Q4 2025, selling 15,833 shares for an estimated $37.0 million and reducing its 13F-reportable AUM exposure by roughly 2.12%. MercadoLibre, trading near $1,970 with TTM revenue of $26.19 billion and net income of $2.08 billion, has underperformed the S&P 500 and faced >$2.1 billion in loan-loss provisions at Mercado Pago; the exit — the largest of 17 positions closed by the fund — signals a notable risk-off repositioning even as the company pursues AI initiatives and could benefit from macro improvements in Argentina and Venezuela.

Analysis

Market structure: Main Street Research’s full exit (~$37M, ~2.12% of its 13F AUM) is a sentiment signal more than a liquidity shock; direct beneficiaries include deep-pocketed competitors (AMZN, SE) and payments incumbents (V, MA) that can step into merchant/processing gaps. MercadoLibre’s integrated stack (marketplace + Mercado Pago + logistics) preserves structural advantages, but increased competitive promo pressure could compress take-rates by 100–200 bps over 12–18 months if Amazon/Sea escalate subsidies.

Risk assessment: Key tail risks are regulatory clampdowns in Brazil/Argentina (new fintech capital rules or interest-rate caps), a repeat of large credit losses (another >$2.1B provisioning quarter), or FX shocks in ARS/BRL that impair receivables—each could drive a 20–40% re-rating in 3–12 months. In the immediate term (days-weeks) expect volatility around earnings/macroeconomic prints; medium term (3–9 months) credit-cycle indicators (NPLs, loan-loss reserves) will dominate valuation.

Trade implications: Tactical plays should be size-constrained and event-driven: favor defined-risk bullish exposure to MELI tied to credit improvement or Argentina macro improvement, and hedge country/FX and marketplace competition exposure. Rotate away from undifferentiated LATAM consumer risk into high-margin ad/infra/AI beneficiaries (GOOGL, MSFT, NVDA) that appear as Main Street’s top holdings and should capture secular advertising/AI upside.

Contrarian angles: Consensus fixates on loan losses and competition but underweights (1) AI-driven underwriting improvements that can cut incremental loss rates by 30–50% within 12 months, and (2) upside from Argentina normalization where a >2% GDP rebound or 10% ARS appreciation would lift revenue/earnings by mid-teens. The sell signal may be overdone; size positions small (1–2%) and use option-defined structures to capture asymmetric upside while capping downside.

Key Decisions for Investors

• Establish a defined-risk bullish position in MELI: Buy a 12-month call spread (long 1,800 / short 2,400 strikes) sized to 1–1.5% of portfolio notional. Add another 0.5–1.0% only if Q1 loan-loss provisions fall >25% q/q or Argentina 5y CDS tightens below 800bps within 3 months.
• Initiate a relative-value pair: Long MELI (1% portfolio) vs Short SE (1% portfolio) for 6–12 months to isolate LatAm recovery vs Southeast Asia demand; unwind if spread tightens to within ±5% or after 12 months.
• Reallocate 2–3% of capital away from LATAM consumer discretionary exposure into NVDA (0.75%), GOOGL (0.75%), and MSFT (0.75%) over the next 4 weeks to capture advertising and AI monetization leverage—trim if NVDA outperforms by >25% or if tech multiples expand >5pt relative to history.
• Set hard risk triggers: cut MELI exposure to zero if (a) quarterly loan-loss provisioning >$3B, (b) active-user growth declines >10% y/y, or (c) ARS weakens another 15% vs USD in a month; otherwise rebalance into MELI if ARS appreciates >10% or provisioning drops >25%.