Kycklingar och minfält

[Passiv]

Mitt ursprungsinlägg om höns och minfält (som TS nämnde) finns nedan för den som vill läsa det.

Det var bara en illustration av survivorship bias.

Aktiv fond bättre än passiv? Vad är det jag missar?

“In finance, survivorship bias is the tendency for failed companies to be excluded from performance studies because they no longer exist. It often causes the results of studies to skew higher because only companies that were successful enough to survive until the end of the period are included. For example, a mutual fund company’s selection of funds today will include only those that are successful now. Many losing funds are closed and merged into other funds to hide poor performance. In theory,…