Meet the millionaires living the ‘underconsumption’ life: They drive secondhand cars, batch cook, and never buy new clothes

Affluent individuals profiled by Fortune follow an “under‑consumption” lifestyle—minimizing discretionary spending (frozen groceries, thrift shopping, fewer restaurant meals, shared commutes) to accelerate wealth accumulation and optional early retirement. The article cites BLS data showing average monthly household expenditures rose to $6,440 in 2023 (up 8.3% year‑over‑year and 15.5% since 2021 when it was $5,577), and gives examples of multimillionaires who keep expenses low (one six‑figure earner reduced household spending to under $4,000/month). For investors, these behavioral shifts signal potential pressure on discretionary retail and travel demand but also exemplify consumer segmentation where frugal high‑net‑worth cohorts prioritize asset allocation and flexibility over consumption.

Analysis

Market structure: A sustained “underconsumption” tilt benefits discount grocers, membership warehouse models, resale marketplaces and staples manufacturers while squeezing high-margin discretionary categories (restaurants, premium apparel, experiential travel). If adoption widens beyond affluent early adopters to ~10%+ of households in 12–24 months, expect a 1–3% reallocation of consumer spend away from discretionary toward staples/value channels, boosting volumes at COST and downward pricing power for luxury retailers.

Risk assessment: Key tail risks include a wages-led inflation resurgence (core CPI >3.5% on a 3‑month annualized basis) or fiscal stimulus that reverses thrift behavior within 60–180 days; conversely, persistent weak services demand could push rates lower. Hidden dependency: the trend is currently concentrated among higher-income earners — mass-market impact requires social-media contagion or macro shock; monitor credit-card delinquency and retail sales weekly (30–90 day horizon) as catalysts.

Trade implications: Near-term (0–3 months) tactical winners: COST (membership + volume upside) and defensive healthcare retailers like CVS; medium-term (3–12 months) duration is attractive if disinflation continues — favor long TLT on confirmed CPI weakness. Use asymmetric options (3-month put spreads on XLY) as cheap downside protection against discretionary compression, size 0.5–1.5% notional.

Contrarian angle: Consensus underestimates the upside to resale/platforms and Costco-like scale economics; it may be overdone on broad consumer weakness — if underconsumption remains income-segmented, lower aggregate demand could force multiple compression across retail, hurting cyclicals and tilting returns to high-quality staples and long-duration assets (6–24 months). Historical parallel: 2008–2010 saw discount/outlet channels gain share; the unintended consequence is durable deflationary pressure on services wages, which would be a long-term tailwind for bonds and quality growth stocks.

Key Decisions for Investors

• Establish a 2–3% core long position in Costco (COST) equity within 1–4 weeks, target +15–25% out to 12 months, place stop-loss at -12% from entry; thesis: membership growth and share gains from value-seeking consumers as underconsumption spreads.
• Initiate a 1–2% defensive long in CVS Health (CVS) within 30 days to capture resilient healthcare cash flows and in-store adoptions; target +10–15% over 6–12 months, trim if company issues guidance cut >5% EPS or same-store sales decline exceeds -3% y/y.
• Prepare a 2% duration allocation to long TLT (or 10y futures equivalent) to deploy if two consecutive monthly CPI prints show core CPI <2.5% or MoM CPI <0.1% (trigger window: next 60 days); target 30–60bps of yield compression, exit on yield rise >40bps from entry.
• Hedge consumer cyclicality with a 0.5–1.5% notional 3-month put‑spread on the Consumer Discretionary Select Sector ETF (XLY): buy ~10% OTM puts and sell ~5% OTM puts to limit premium, roll or unwind if XLY falls >8% or aftermarket retail prints miss by >2σ.
• Watch Intuit (INTU) and weekly credit-card delinquency/consumer credit data: if monthly card delinquencies rise >25% y/y or INTU issues two consecutive negative EPS revisions totaling -5% within 60 days, consider a tactical 1% short or pair trade (short INTU, long COST) to capture rotation to value/discounters.