$ST Engineering (S63.SG)$ ST bought back 1000000 shares yesterday, maybe that was why it dropped too much?

$SPDR S&P 500 ETF (SPY.US)$
If i was a bold man i would full port monthly 565p. mostly cash instead, i would rather perserve than risk it all.

$Grab Holdings (GRAB.US)$ I woke up and this was in my portfolio have no idea how it got there. any thoughts?

$NVIDIA (NVDA.US)$  
The S&P 500 is currently testing the most crucial support of the upward trendline since November 2023. If it falls below 5400 points, it will trigger a sell-off of $210 billion from hedge funds, based on the recent sharp decline in the PHLX Semiconductor Index. It is advisable to protect your positions against further drops, as a 5% decline would feel like a game. Taking advantage of the market downturn can also be profitable.
Taking NVIDIA as an example, the current price is $112.
Corresponding to every 100 shares.
(buy put option on nvidia 240920 with a strike price of 112)
(sell put option on nvidia 241220 with a strike price of 115)
(sell put option on nvidia 241220 with a strike price of 86)
(sell covered call on nvidia 240802 with a strike price of 118)
The benefit of doing this is to hedge against a sharp decline, and at the same time, adding positions at a lower cost when the time comes. For advanced options strategies, consider opening a synthetic call at $100-$105, to be held until the end of the year. If you anticipate a sideways market, you can open an iron condor strategy with a 10% stop loss set for knock out.

NanoFilm share price surged just 10% yesterday and got query from SGX resulting in the stock trade halted. Yoma Strategic dropped by 28% but no query from SGX and trading halt? No wonder most investors tend to avoid investing in SGX listed stocks and instead focus on USA and Hong Kong stock market.
$Yoma Strategic (Z59.SG)$ $Nanofilm (MZH.SG)$

$YZJ Shipbldg SGD (BS6.SG)$
False breakout + rounded top
If a rounded top retraces, it generally returns to the vicinity of the starting point of the rise.

$DBS Group Holdings (D05.SG)$ Why does the historical stock price show negative values?

$DBS Group Holdings (D05.SG)$ Hi! Moo ! if i use moomoo sg to buy DBS, can i sell it when i am in malaysia? using moomoo app. pls advise n many thanks !