Momentum

Monthly momentum: hold the 15 strongest stocks until they fade

• Investing
• Passed 8 of 8 checks
• Risk: Very high

Holding the NIFTY 500’s 15 strongest stocks, and selling only when they drop out of the top 30, passed all eight of our checks: CAGR of about 22% after costs, against about 13% for the index. The catch is a −49% drawdown, deeper than the index’s.

• Equities
• Momentum
• Rotation
• Portfolio construction
• Investments
• Monthly

8 Oct 2026 · 6 min read

Survivorship bias

Testing a stock strategy on today's index members quietly deletes every company that failed along the way, and lets you buy smaller companies that only later grew big enough to join the index. The results look far better than anything you could have traded.

• Equities
• Positional
• Momentum
• Rotation
• survivorship
• universe
• point-in-time
• equity backtests

7 Oct 2026 · 4 min read