To that morning post (~11.35) you may add the following "schematic" (long/short) vol. trading:
in ~15-20 min since opening, when was clear the R1 can't be broken directly (see above), the 'aex' switched to st-downtrending and fast profit was taken ("long-leg" was completed), the next d-strategy step was clear --> switch to a "short leg" (on d-horizon, of course) from R1 towards PP, testing intermediate s-zones (see recent post) on "bull/bear" d-powers...., and going down as lower as possible towards S1/S2, and "checking" M-points (closing "d-shorts" just "in time") optimizing d-returns.
To this you could add some (actually many) other strategies/objectives. For instance, objectives for longer horizons (conditional on current kpn-info) --> the lower you buy --> the higher your, at least, "risk-free" (guaranteed, or well known) div-returns....
Actually "short legs" provide a good "step-in" option for high-volume investors. As any "direct buy" of relatively large volumes (in respect to current liquidity) will rise prices and "average-buy". So, to buy a lot, big parties need time (conditional on liquidity), as well as, in some cases a number of (comp optimized) "buy/sell" switching over (indeed, a "small sell" well above "bigger buy", imposing fake st/d-downtrending, "supported" by d-volatility traders, may reasonably decrease "average", or keep it on "prescribed levels", if properly optimized).