Walleye Trading LLC Merck & Co., Inc. Transaction History

Walleye Trading LLC

  • $61.8 Billion
  • Q3 2025

A detailed history of Walleye Trading LLC transactions in Merck & Co., Inc. stock. As of the latest transaction made, Walleye Trading LLC holds 209,100 shares of MRK stock, worth $19.4 Million. This represents 0.03% of its overall portfolio holdings.

Number of Shares
209,100
Previous 295,600 29.26%
Holding current value
$19.4 Million
Previous $23.4 Million 25.0%
% of portfolio
0.03%
Previous 0.04%

Shares

18 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 14, 2025
SELL
$77.6 - $87.37 $1.7 Million - $1.91 Million
-21,916 Reduced 29.1%
53,397 $4.48 Million
Q2 2025

Aug 13, 2025
SELL
$73.47 - $87.12 $2.61 Million - $3.09 Million
-35,508 Reduced 32.04%
75,313 $5.96 Million
Q1 2025

May 14, 2025
BUY
$83.01 - $101.02 $9.2 Million - $11.2 Million
110,821 New
110,821 $9.95 Million
Q3 2024

Nov 14, 2024
SELL
$111.15 - $128.97 $812,728 - $943,028
-7,312 Reduced 12.34%
51,924 $5.9 Million
Q2 2024

Aug 14, 2024
BUY
$123.8 - $132.96 $7.33 Million - $7.88 Million
59,236 New
59,236 $7.33 Million
Q4 2023

Feb 14, 2024
SELL
$100.18 - $109.02 $9.39 Million - $10.2 Million
-93,695 Reduced 68.8%
42,492 $4.63 Million
Q3 2023

Nov 14, 2023
BUY
$102.95 - $114.33 $14 Million - $15.6 Million
136,187 New
136,187 $14 Million
Q4 2022

Feb 14, 2023
SELL
$87.44 - $112.11 $2.09 Million - $2.68 Million
-23,877 Reduced 31.13%
52,830 $5.86 Million
Q3 2022

Nov 14, 2022
BUY
$84.53 - $94.96 $6.48 Million - $7.28 Million
76,707 New
76,707 $6.61 Million
Q4 2021

Feb 14, 2022
SELL
$72.28 - $90.54 $37,874 - $47,442
-524 Reduced 0.4%
129,557 $9.93 Million
Q3 2021

Nov 15, 2021
BUY
$71.68 - $78.83 $8.23 Million - $9.05 Million
114,863 Added 754.78%
130,081 $9.77 Million
Q1 2021

May 17, 2021
SELL
$68.86 - $81.11 $3.03 Million - $3.57 Million
-43,997 Reduced 74.3%
15,218 $1.17 Million
Q4 2020

Feb 16, 2021
BUY
$71.77 - $79.65 $2.39 Million - $2.65 Million
33,241 Added 127.98%
59,215 $4.84 Million
Q2 2018

Aug 14, 2018
SELL
$50.83 - $59.72 $3.68 Million - $4.33 Million
-72,490 Reduced 73.62%
25,974 $1.58 Million
Q1 2018

May 15, 2018
BUY
$50.96 - $59.23 $3.75 Million - $4.36 Million
73,546 Added 295.15%
98,464 $5.36 Million
Q4 2017

Feb 14, 2018
SELL
$51.62 - $61.64 $1.56 Million - $1.86 Million
-30,132 Reduced 54.74%
24,918 $1.4 Million
Q3 2017

Nov 14, 2017
BUY
$58.67 - $63.13 $2.2 Million - $2.36 Million
37,439 Added 212.59%
55,050 $3.53 Million
Q2 2017

Aug 14, 2017
BUY
N/A
17,611
17,611 $1.13 Million

Others Institutions Holding MRK

# of Institutions
3,878
Shares Held
1.9B
Call Options Held
30.1M
Put Options Held
27.7M
View Full List

About Merck & Co., Inc.

MRK Quotes by TradingView
  • Ticker MRK
  • Exchange NYSE
  • Sector Healthcare
  • Industry Drug Manufacturers—General
  • Shares Outstandng 2,533,280,000
  • Market Cap $235B
  • Description
  • Merck & Co., Inc. operates as a healthcare company worldwide. It operates through two segments, Pharmaceutical and Animal Health. The Pharmaceutical segment offers human health pharmaceutical products in the areas of oncology, hospital acute care, immunology, neuroscience, virology, cardiovascular, and diabetes, as well as vaccine products, ...
More about MRK
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