Nanex Research

Nanex ~ 1-May-2013 ~ Merck May Day

At 10:09:39 on May 1, 2013, the stock of Merck, Inc. (Symbol: MRK, Market Cap: $137 Billion) dropped 1.3% on about 300,000 shares in less than 1/2 second. Not fast enough to take the crown from Symantec.


1. MRK - Nanex Tick Chart. (How to read this chart).


2. MRK - Trades color coded by reporting exchange.
Note the late trade reports from dark pools (green squares).

3. MRK - Trades color coded by reporting exchange. Zoomed in to 1 second of time.


Nanex Research

Inquiries: pr@nanex.net