Investor risk-return preferences - page 2

 

I’d still pick #1 (long-only) for most people. Long/short can work, but it’s a risk tool, not a magic return button. If you do use shorts, keep them small and boring.

My rule-of-thumb:

  • Short allocation: around 10–30% of the portfolio unless you have a proven process.

  • Leverage: keep gross exposure about 1.3–1.5× equity and margin used under ~30%.

  • Per-position risk: 0.5–1% of equity per short. Position size = (risk % of equity) / (stop %).
    Example: risk 0.75% with a 12% stop → ~6.2% of NAV in that short.

  • Stops: volatility-based (2–3× ATR above the recent high). Avoid crowded names and expensive borrow.

  • If the goal is protection, index futures, inverse ETFs, or put spreads are usually cleaner than shorting lots of single names.

Quick $100k example: long 90k, short 20k (gross 1.1×, net 70k). Risk $750 per short; with a 12% stop that’s about a $6.2k position in each short. Plenty of margin buffer, low stress.

TL;DR: long-only is fine. If you add shorts, do it modestly, size by risk, use real stops, and keep a healthy margin buffer.