TOPIC • 4 CLAIMS

Concentration

How much of an index, a return, or a portfolio rests on how few names.

  1. HOWARD MARKS/

    He notes how narrow the market’s dependence on one theme has become.

    • AI stocks accounted for 75% of S&P 500 gains, 80% of profits, 90% of capex
    IS IT A BUBBLE? →
  2. HOWARD MARKS/

    His aside on concentration inverts the usual complaint: the seven biggest names are not what makes the index expensive, because their multiples look defensible against their moats and margins — it is the multiple on everything else that he finds worrisome.

    • a bit over half of the S&P 500’s 58% two-year total return in 2023-24 came from seven stocks
    • those seven have grown to about one-third of the index’s total market value
    • their p/e ratios average roughly 33
    • the other 493 companies average a p/e of 22, against a mid-teens historical average for the index
    • Nifty-Fifty stocks were selling at p/e ratios between 60 and 90 in 1969
    THE CALCULUS OF VALUE →
  3. HOWARD MARKS/

    Concentration is the fact he leads with, and it now exceeds the peak of the bubble he wrote about 25 years earlier.

    • the top seven were 32-33% of S&P 500 capitalization at the end of October
    • roughly double the leaders’ share five years earlier
    • against a prior 28-year high of roughly 22% in 2000
    • US stocks over 70% of the MSCI World Index, the highest since 1970
    ON BUBBLE WATCH →
  4. HOWARD MARKS/

    A multiple in the 30s is a bet on persistence, and the churn in his own tables suggests change is more the rule.

    • Nvidia at a forward multiple in the low 30s, double the post-war S&P average of roughly 16 but cheap against the Nifty Fifty
    • only six of the top twenty S&P companies of early 2000 were still in the top twenty in early 2024
    • of today’s Magnificent Seven only Microsoft was in that 2000 top twenty
    ON BUBBLE WATCH →

Claims are restated; figures are the authors' own. Each links to the document it came from, which in turn links to the original in full.