The underwriters didn't have to expand the offering or take the "greenshoe" options. What happened is that the underwriters got actual, real purchase demand for ALL the shares, which is why they expanded the offering and took all the options; they were left with no position themselves.
They then proceeded, at least in the case of Morgan Stanley, to attempt to hurt the clients who had bought the shares from them by driving the stock price down. Both MS and GS have been documented to do this sort of thing in the past to other stocks. They consider their clients to be marks and targets, not customers.
I suspect the purchasers mostly are sitting on their shares, quietly, long-term. If anything, the offering means that those purchasers aren't buying shares on the open market now, when they otherwise would have been -- if a customer bought half a million shares from GS during the offering, they won't be buying that half a million shares on the open market now.
Interesting perspective. Price action on shares since latest offering:
Date Open High Low Close* Adj Close** Volume
May 24, 2019 199.83 199.98 188.75 190.63 190.63 14,119,900
May 23, 2019 194.34 199.47 186.22 195.49 195.49 26,547,100
May 22, 2019 199.10 203.94 191.78 192.73 192.73 18,685,200
May 21, 2019 197.76 207.40 196.04 205.08 205.08 18,003,900
May 20, 2019 202.80 206.00 195.25 205.36 205.36 20,526,200
May 17, 2019 221.96 222.24 208.92 211.03 211.03 17,786,700
May 16, 2019 229.49 231.00 226.50 228.33 228.33 7,483,300
May 15, 2019 229.32 232.44 225.25 231.95 231.95 7,296,000
May 14, 2019 229.30 234.50 228.00 232.31 232.31 7,252,400
May 13, 2019 232.01 232.47 224.50 227.01 227.01 10,834,800
May 10, 2019 239.75 241.99 236.02 239.52 239.52 7,008,300
May 09, 2019 242.00 243.68 236.94 241.98 241.98 6,711,400
May 08, 2019 246.94 250.60 244.20 244.84 244.84 6,176,400
May 07, 2019 256.80 257.21 245.10 247.06 247.06 10,131,400
May 06, 2019 250.02 258.35 248.50 255.34 255.34 10,833,900
May 03, 2019 243.86 256.61 243.49 255.03 255.03 23,706,800
What is the motive of the ABL creditors to drive the share price below $190?