Here are the top gap ups and downs for the stocks with a market cap above $5 billion after market closed (gaps range from large to small):
Gap Ups
1. $Splunk (SPLK.US)$ - up 9.9%
2. $POSCO (PKX.US)$ - up 2.7%
3. $Autodesk (ADSK.US)$ - up 1.1%
4. $UBS Group (UBS.US)$ - up 1.0%
5. $Prudential Financial (PRU.US)$ - up 0.7%
6. $Baidu (BIDU.US)$ - up 0.5%
7. $KT Corp (KT.US)$ - up 0.4%
8. $Chunghwa Telecom (CHT.US)$ - up 0.3%
Gap Downs
1. $Dollar Tree (DLTR.US)$ - down 5...

Here are the top gap ups and downs for the stocks with a market cap above $5 billion after market closed (gaps range from large to small):
Gap Ups
1. $Black Knight (BKI.US)$ - up 3.6%
2. $KT Corp (KT.US)$ - up 2.9%
3. $Viatris (VTRS.US)$ - up 2.1%
4. $Elanco Animal Health (ELAN.US)$ - up 1.5%
5. $DaVita (DVA.US)$ - up 1.2%
6. $Novo-Nordisk A/S (NVO.US)$ - up 0.7%
7. $RBC Bearings (RBC.US)$ - up 0.6%
8. $Curtiss-Wright (CW.US)$ - up 0....

Here are the top gap ups and downs for the stocks with a market cap above $5 billion after market closed (gaps range from large to small):
Gap Ups
1. $Arista Networks (ANET.US)$ - up 9.6%
2. $Oshkosh (OSK.US)$ - up 6.2%
3. $Woodward (WWD.US)$ - up 4.5%
4. $Global Payments (GPN.US)$ - up 4.4%
5. $Eaton (ETN.US)$ - up 2.8%
6. $Caterpillar (CAT.US)$ - up 2.0%
7. $Trex Co. (TREX.US)$ - up 2.0%
8. $KT Corp (KT.US)$ - up 1.7%
9. $SBA Communications Corp (SBAC.US)$ - up 1.5...

Here are the top gap ups and downs for the stocks with a market cap above $5 billion after market closed (gaps range from large to small):
Gap Ups
1. $Stellantis NV (STLA.US)$ - up 2.7%
2. $LM Ericsson Telephone (ERIC.US)$ - up 2.4%
3. $Mitsubishi UFJ Financial Group (MUFG.US)$ - up 2.1%
4. $Tenaris (TS.US)$ - up 1.9%
5. $Charles Schwab (SCHW.US)$ - up 1.2%
6. $M&T Bank (MTB.US)$ - up 1.1%
7. $Wells Fargo & Co (WFC.US)$ - up 1.0%
8. $Orange SA (ORAN.US)$ - up 1.0...

Here are the top gap ups and downs for the stocks with a market cap above $5 billion after the previous market closed (gaps range from large to small):
Gap Ups
1. $Royal Philips (PHG.US)$ - up 13.10%
2. $Wipro (WIT.US)$ - up 2.0%
3. $Fresenius Medical Care (FMS.US)$ - up 1.5%
4. $Credit Suisse (CS.US)$ - up 1.1%
5. $Elbit Systems (ESLT.US)$ - up 1.1%
6. $Cerevel Therapeutics Holdings (CERE.US)$ - up 0.8%
7. $Aegon Ltd (AEG.US)$ - up 0.7%
8. $TotalEnergies (TTE.US)$ - up 0.4%...

Here are the top gap ups and downs for the stocks with a market cap above $5 billion after the previous market closed (gaps range from large to small):
Gap Ups
1. $Encompass Health (EHC.US)$ - up 8.0%
2. $KT Corp (KT.US)$ - up 1.9%
3. $Haleon (HLN.US)$ - up 1.7%
4. $ServiceNow (NOW.US)$ - up 1.3%
5. $Elbit Systems (ESLT.US)$ - up 0.8%
6. $Check Point Software (CHKP.US)$ - up 0.4%
7. $GlaxoSmithKline (GSK.US)$ - up 0.4%
8. $Diageo (DEO.US)$ - u...

Here are the top gap ups and downs for the stocks with a market cap above $5 billion after the previous market closed (gaps range from large to small):
Gap Ups
1. $Lululemon Athletica (LULU.US)$ - up 11.9%
2. $Prudential (PUK.US)$ - up 2.7%
3. $UBS Group (UBS.US)$ - up 2.6%
4. $Cintas (CTAS.US)$ - up 2.4%
5. $STMicroelectronics (STM.US)$ - up 2.3%
6. $XPeng (XPEV.US)$ - up 2.1%
7. $Logitech International (LOGI.US)$ - up 2.0%
8. $Seagate Technology (STX.US)$ - up 1.9%...

Upgrades
• $CDW Corp (CDW.US)$: Stifel Upgrades to Buy from Hold - PT $210 (from $200)
• $Corteva (CTVA.US)$ : Loop Capital Upgrades to Buy from Hold - PT $69
• $CoreCivic, Inc. (CXW.US)$ : Wedbush Upgrades to Outperform from Neutral - PT $17 (from $10.85)
• $Delta Air Lines (DAL.US)$ : Barclays Upgrades to Overweight from Equalweight - PT $60 (from $42)
• $H.B. Fuller (FUL.US)$ : Baird Upgrades to Outperform from Neutral - PT $85
• $Huntington Ingalls Industries (HII.US)$ : Cowen U...

At this point it makes more sense to sell $KT Corp (KT.US)$for its equity and make $13 billion than let it operate as a company with a market cap of $5.91 billion
$Apple (AAPL.US)$  $Amazon (AMZN.US)$ $Alphabet-C (GOOG.US)$ $Alphabet-A (GOOGL.US)$ $Microsoft (MSFT.US)$

If you weren't paying attention, a minute before the market closed $KT Corp (KT.US)$
went from around 500k shares to 1.8 million traded in the US market today
$Apple (AAPL.US)$ $Amazon (AMZN.US)$ $Alphabet-C (GOOG.US)$ $Alphabet-A (GOOGL.US)$ $Microsoft (MSFT.US)$