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Technical Analysis

Capture ratios: how a fund behaves in up and down markets

Two numbers that reveal a fund’s real character: how much of the market’s gains it captures, and how much of its losses. Why the downside one usually matters more, and what a great pairing looks like.

Technical AnalysisAdvanced9 min read
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A fund’s average return hides its personality. Two funds can post the same annual number while behaving completely differently — one roaring in bull markets and crashing in bears, the other calm in both. Capture ratios split that behaviour in two: how much of the market’s gains a fund captures, and how much of its losses.

Upside and downside, measured separately

The upside capture ratio is the fund’s return in rising markets divided by the benchmark’s return over the same periods; the downside capture ratio is the same for falling markets. An upside capture of 110% means it gained 10% more than the index when markets rose; a downside capture of 80% means it fell only 80% as much when they dropped. Separating the two exposes the asymmetry a single average return conceals.

Reading the two numbers
The pairing you want
  • Upside capture near or above 100%
  • Downside capture well below 100%
  • Participates in gains, cushions losses
  • Genuine asymmetry — a sign of skill
The pairing to avoid
  • Low upside capture
  • High downside capture
  • Misses gains, suffers full losses
  • The worst of both worlds
Check yourself

Fund A has 100% upside and 100% downside capture (it tracks the index). Fund B has 95% upside and 65% downside capture. Which is likely the better long-term compounder, and why?

Simple bhasha mein
Tezi aur mandi, alag-alag

Ek average return fund ka asli character chhupa deta hai. Upside capture: market badhne pe fund ne kitna pakda (110% = 10% zyada). Downside capture: girne pe kitna pakda (80% = sirf 80% gira). Best jodi: upside ~100%+, downside <100%. Downside zyada zaroori — kam girna, loss ki asymmetry ki wajah se, lambe mein zyada compound karta hai. 95% upside + 65% downside wala fund aksar flashy 120/130 wale se behtar — kyunki use aap tik ke rakh sakte ho.

What to remember
  • Capture ratios measure a fund’s return versus its benchmark in up and down markets separately.
  • Upside capture above 100% and downside capture below 100% is the ideal, asymmetric pairing.
  • Downside capture usually matters more, because avoided losses compound via the loss asymmetry.
  • They reveal a fund’s character — defensive compounder versus aggressive amplifier.
  • Judge them against the right benchmark over a full cycle that includes a real drawdown.
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Common questions

Short, direct answers to what people ask about this topic.

what are capture ratios
Capture ratios measure how a fund performs relative to its benchmark in rising and falling markets separately. The upside capture ratio is the fund’s return in up-market periods divided by the benchmark’s return in those periods, and the downside capture ratio is the same for down-market periods. An upside capture of 110% means the fund gained 10% more than the benchmark when markets rose; a downside capture of 80% means it fell only 80% as much when markets dropped. Together they describe a fund’s character far better than a single average return.
what is a good capture ratio combination
The ideal is a high upside capture and a low downside capture — participating fully or more than fully in gains while cushioning losses. An upside capture above 100% combined with a downside capture below 100% signals genuine asymmetry and skill, because the fund adds value in both environments. A fund with 90% upside and 70% downside can still be excellent, because losing much less in downturns compounds powerfully over time. What you want to avoid is the reverse: low upside capture with high downside capture, which is the worst of both worlds.
why does downside capture matter more than upside
Because of the asymmetry of losses: a fall requires a larger percentage gain to recover, so avoiding losses compounds more powerfully than capturing gains. A fund that loses less in every downturn preserves the capital base that future returns compound on, which is why a low downside capture often does more for long-run wealth than a dazzling upside number. Many of the best long-term records come not from spectacular up-market performance but from consistently losing less than the market when it falls.