Bollinger bubble is an edition for market like CAC40, DJ30, ..
The market are uptrend with the inflation, this edition only buy (you have less risk then sell)
We buy when a candle open & close outside the lower bollingers band and we target the last highest point on the last 10 candles.
Here we are looking at the Excess CAPE yield for the SPX500 over the last 100+ years
"A higher CAPE meant a lower subsequent 10-year return, and vice versa. The R-squared was a phenomenally high 0.9 — the CAPE on its own was enough to explain 90% of stocks’ subsequent performance over a decade. The standard deviation was 1.37% — in other words, two-thirds of the...