I like to use the 20 DEMA to match Gann angles and to me it looks like SPY has been moving upwards along the 1/2 (blue arrows) on every rally. A Gann Box drawn along this line is forecasting a top in the next several days.
1) Check out the retrace from the narrow range of 328.5 - 328.8... Lines up w/ pivots from this year pretty well.
2) Daily MFI (light blue line) is diverging and falling fast
3) Daily RSI shows bearish divergence
4) Current round of Fed repo expires Jan 14, China signs trade deal Jan 15, all the ingredients for selling the news are there...
5) Minor elliott waves show that we're probably about to finish wave (v) of 3. Given 2 looks like a flat, 4 will likely be a steep correction.
6) Gann box I drew for SPX (not shown here) forecasted a low around the 1st - 2nd week of February.
7) First target is the .236 retrace around 315. Ultimate target the .382 retrace around 307. Will scalp calls at these levels.
My guess is Fed panics and brings back repo when the market starts collapsing when their balance sheet starts shrinking.
May or may not try to snipe the sell target, always better to wait for confirmation on a break below the 1/2 or 20 DEMA. Even better if it looks to be correlated w/ news that the Fed intends to trim their balance sheet.