California State Teachers Retirement System Merck & Co., Inc. Transaction History

California State Teachers Retirement System

  • $94.5 Billion
  • Q3 2025

A detailed history of California State Teachers Retirement System transactions in Merck & Co., Inc. stock. As of the latest transaction made, California State Teachers Retirement System holds 4,060,037 shares of MRK stock, worth $377 Million. This represents 0.36% of its overall portfolio holdings.

Number of Shares
4,060,037
Previous 4,063,309 0.08%
Holding current value
$377 Million
Previous $322 Million 5.94%
% of portfolio
0.36%
Previous 0.37%

Shares

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

Nov 14, 2025
SELL
$77.6 - $87.37 $253,907 - $285,874
-3,272 Reduced 0.08%
4,060,037 $341 Million
Q2 2025

Aug 14, 2025
BUY
$73.47 - $87.12 $1.37 Million - $1.63 Million
18,699 Added 0.46%
4,063,309 $322 Million
Q1 2025

May 15, 2025
SELL
$83.01 - $101.02 $2.59 Million - $3.15 Million
-31,218 Reduced 0.77%
4,044,610 $363 Million
Q4 2024

Feb 14, 2025
SELL
$96.31 - $114.76 $5.69 Million - $6.78 Million
-59,042 Reduced 1.43%
4,075,828 $405 Million
Q3 2024

Apr 04, 2025
BUY
$111.15 - $128.97 $6.56 Million - $7.61 Million
59,042 Added 1.45%
4,134,870 $470 Million
Q3 2024

Nov 14, 2024
SELL
$111.15 - $128.97 $886,198 - $1.03 Million
-7,973 Reduced 0.19%
4,134,870 $470 Million
Q2 2024

Apr 08, 2025
BUY
$123.8 - $132.96 $8.3 Million - $8.91 Million
67,015 Added 1.64%
4,142,843 $513 Million
Q2 2024

Aug 14, 2024
BUY
$123.8 - $132.96 $2.9 Million - $3.11 Million
23,410 Added 0.57%
4,142,843 $513 Million
Q1 2024

May 15, 2024
BUY
$113.24 - $131.95 $2.78 Million - $3.24 Million
24,526 Added 0.6%
4,119,433 $544 Million
Q4 2023

Feb 13, 2024
BUY
$100.18 - $109.02 $4.86 Million - $5.29 Million
48,501 Added 1.2%
4,094,907 $446 Million
Q3 2023

Nov 14, 2023
SELL
$102.95 - $114.33 $16.9 Million - $18.7 Million
-163,971 Reduced 3.89%
4,046,406 $417 Million
Q2 2023

Aug 21, 2023
SELL
$108.61 - $118.38 $9.14 Million - $9.97 Million
-84,193 Reduced 1.96%
4,210,377 $486 Million
Q1 2023

May 09, 2023
SELL
$102.94 - $114.86 $4.1 Million - $4.58 Million
-39,868 Reduced 0.92%
4,294,570 $457 Million
Q4 2022

Feb 14, 2023
BUY
$87.44 - $112.11 $5.83 Million - $7.47 Million
66,620 Added 1.56%
4,334,438 $481 Million
Q3 2022

Nov 18, 2022
SELL
$84.53 - $94.96 $13.1 Million - $14.8 Million
-155,446 Reduced 3.51%
4,267,818 $368 Million
Q2 2022

Aug 15, 2022
BUY
$83.49 - $94.64 $398,748 - $452,000
4,776 Added 0.11%
4,423,264 $403 Million
Q1 2022

May 16, 2022
SELL
$73.51 - $82.4 $19.1 Million - $21.4 Million
-260,311 Reduced 5.56%
4,418,488 $363 Million
Q4 2021

Feb 15, 2022
BUY
$72.28 - $90.54 $2.02 Million - $2.54 Million
28,007 Added 0.6%
4,678,799 $359 Million
Q3 2021

Nov 15, 2021
BUY
$71.68 - $78.83 $3.36 Million - $3.7 Million
46,876 Added 1.02%
4,650,792 $349 Million
Q2 2021

Aug 16, 2021
SELL
$70.31 - $77.77 $28.7 Million - $31.8 Million
-408,448 Reduced 8.15%
4,603,916 $358 Million
Q1 2021

May 18, 2021
SELL
$68.86 - $81.11 $2.95 Million - $3.47 Million
-42,841 Reduced 0.85%
5,012,364 $386 Million
Q4 2020

Feb 16, 2021
SELL
$71.77 - $79.65 $4.08 Million - $4.53 Million
-56,895 Reduced 1.11%
5,055,205 $414 Million
Q3 2020

Nov 17, 2020
SELL
$73.18 - $82.95 $4.4 Million - $4.99 Million
-60,144 Reduced 1.16%
5,112,100 $424 Million
Q2 2020

Aug 17, 2020
SELL
$70.42 - $80.13 $8.96 Million - $10.2 Million
-127,277 Reduced 2.4%
5,172,244 $400 Million
Q1 2020

May 13, 2020
BUY
$63.36 - $87.82 $1.71 Million - $2.37 Million
26,963 Added 0.51%
5,299,521 $408 Million
Q4 2019

Feb 14, 2020
BUY
$77.58 - $87.54 $36.1 Million - $40.7 Million
465,215 Added 9.68%
5,272,558 $480 Million
Q3 2019

Nov 15, 2019
BUY
$76.08 - $82.93 $3.77 Million - $4.11 Million
49,502 Added 1.04%
4,807,343 $405 Million
Q2 2019

Aug 14, 2019
SELL
$69.84 - $81.59 $4.05 Million - $4.73 Million
-57,995 Reduced 1.2%
4,757,841 $399 Million
Q1 2019

May 09, 2019
BUY
$69.58 - $79.36 $380,115 - $433,543
5,463 Added 0.11%
4,815,836 $401 Million
Q4 2018

Feb 13, 2019
SELL
$65.24 - $75.71 $8.77 Million - $10.2 Million
-134,477 Reduced 2.72%
4,810,373 $368 Million
Q3 2018

Nov 14, 2018
BUY
$57.69 - $67.84 $2.63 Million - $3.1 Million
45,640 Added 0.93%
4,944,850 $351 Million
Q2 2018

Aug 14, 2018
SELL
$50.83 - $59.72 $4.27 Million - $5.02 Million
-84,080 Reduced 1.69%
4,899,210 $297 Million
Q1 2018

May 15, 2018
SELL
$50.96 - $59.23 $7.17 Million - $8.34 Million
-140,794 Reduced 2.75%
4,983,290 $271 Million
Q4 2017

Feb 14, 2018
BUY
$51.62 - $61.64 $15.3 Million - $18.3 Million
296,080 Added 6.13%
5,124,084 $288 Million
Q3 2017

Nov 13, 2017
BUY
$58.67 - $63.13 $283 Million - $305 Million
4,828,004
4,828,004 $309 Million

Others Institutions Holding MRK

# of Institutions
3,875
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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