apps2 · pemarcap

Historical P/E ratio & market cap — mega-caps (Amazon · Oracle · Apple · Micron · AMD · Nvidia · Microsoft · Cisco · Intel · Alphabet · Meta · Tesla · Palantir · SpaceX), monthly, deep history back toward the dot-com era for relative comparison. Log-scale lines (actual P/E & $ on the axis) + a P/E hot/cold tape. SpaceX is private — market cap only, no P/E. hubsectorspemarcapstockscohortsdecoup loading…
Data coverage & honesty — read before comparing eras
Time window — shared across every chart
Historical P/E ratio — every stock, monthly LOG P/E Actual P/E on the axis (log scale by default so every era is comparable). Each stock individually selectable · click a line to isolate · negative-EPS months break the line (never interpolated).
P/E hot/cold tape — red = expensive vs own history · blue = cheap
rows use the same stock selection as the chart above (Select / Deselect all & chips)
Historical market cap — every stock, monthly LOG $ Actual market cap $ on the axis (log scale by default, $1B–$4.7T). Each stock individually selectable · click a line to isolate.
Market-cap hot/cold tape — red = large vs own history · blue = small
rows use the same stock selection as the chart above
P/E vs size — residual-z decoupling strip RESIDUAL-Z β-adjusted P/E-move not explained by market-cap-move, z-scored vs a trailing 24-month window · red = P/E rich vs size · blue = P/E cheap vs size · uses the same stock selection as the P/E chart above (SpaceX excluded — no P/E).
Current decoupling vs its own history — black pin = now · rails share one σ scale so names compare
Seasonality — monthly return distribution PER MONTH Each rail = one calendar month's return distribution across all years (individual, no average) · black pin = most-recent occurrence · n = years per month · full history (window-independent).
How to read this — valuation vs size across the cycle
Log = comparable erasA P/E of 20 and a dot-com/hyper-growth P/E of 400 only sit on ONE readable chart in log scale — the default here. The axis still reads the actual multiple.
Valuation vs sizeThe P/E chart asks how expensive each name is; the market-cap chart asks how big it has become. A rising cap on a falling P/E = earnings out-running the price (value building); a rising P/E on a flat cap = multiple expansion (hope building).
Hot/cold tape = who's stretchedThe line charts show exact paths; the tapes make it glanceable which names are red-hot (expensive / largest vs their own history) and which are washed-out blue right now.
Cross-sectional rankSwitch a tape to cross-sectional rank to see, each month, which of the 12 was the most expensive / largest relative to the others — rotation across the mega-cap complex.
Isolate one nameClick any line to isolate it (the others dim, benchmarks-style is N/A here); click empty space to clear. Click a tape date column to rank every stock at that month.
Gaps are honestWhere P/E is undefined (negative earnings) the line simply breaks. Younger names (Tesla, Meta, Alphabet) start partway across — never stretched to fake a longer history.
Residual-z = valuation vs size decouplingThe residual-z strip automates the read-through above: it regresses each month's P/E move on its market-cap move and colors the leftover — red = P/E ran richer than size implies (multiple expansion beyond size), blue = P/E ran cheaper than size (earnings out-running the price). Coupled months are pale.
Seasonality = individual months, no averageThe seasonality panel shows each calendar month's return distribution across all years as a rail (every year is a tick, black pin = most recent). There is no single seasonal-average line by design — the spread and skew are the point, and an average would hide them.
apps2/pemarcapHistorical P/E ratio & market cap for mega-caps (incl. Palantir & private SpaceX — market cap only), monthly, deep history toward the dot-com era for relative comparison.
UniverseAmazon · Oracle · Apple · Micron · AMD · Nvidia · Microsoft · Cisco · Intel · Alphabet · Meta · Tesla.
P/EPrice ÷ annual diluted EPS (stepped, as-of). Negative-EPS months = undefined = line breaks (never interpolated).
Market capPrice × shares outstanding, in USD.
SourceEPS / shares 2007+ = SEC EDGAR; pre-2007 = curated dot-com seed (ramping). Price monthly back to 1984 for the oldest names.
Default viewLog scale — P/E ~5–1600 and market cap $1B–$4.7T compressed so every era is comparable; the axis & tooltip always read the actual value.
TooltipsHover any label for a plain-language explanation.