MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

TCW GROUP INC's Holding History (CIK: 0000850401)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 783,817 Value ($000) $82,505 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 494,085 Value ($000) $41,469 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 238,478 Value ($000) $18,878 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 220,188 Value ($000) $19,764 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 355,620 Value ($000) $35,377 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 450,123 Value ($000) $51,116 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 454,019 Value ($000) $56,208 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 223,130 Value ($000) $29,442 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 50,240 Value ($000) $5,467 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 10,505 Value ($000) $1,081 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 10,505 Value ($000) $1,212 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 10,505 Value ($000) $1,118 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 10,505 Value ($000) $1,166 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 10,154 Value ($000) $874 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 10,154 Value ($000) $926 Avg Close $79.21 Range $72.83 - $86.09

Q4 2021

Shares 10,617 Value ($000) $814 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 15,197 Value ($000) $1,141 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 15,197 Value ($000) $1,182 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 39,139 Value ($000) $3,017 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 39,139 Value ($000) $3,202 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 39,139 Value ($000) $3,247 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 39,139 Value ($000) $3,027 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 38,755 Value ($000) $2,982 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 316,246 Value ($000) $28,763 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 624,134 Value ($000) $52,540 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 1,011,604 Value ($000) $84,823 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 1,778,886 Value ($000) $147,950 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 2,186,513 Value ($000) $167,072 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 2,485,962 Value ($000) $176,354 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 2,737,923 Value ($000) $166,192 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 2,705,801 Value ($000) $147,385 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 2,804,013 Value ($000) $157,782 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 3,105,609 Value ($000) $198,853 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 3,081,046 Value ($000) $197,465 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 2,470,303 Value ($000) $156,963 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 2,840,265 Value ($000) $167,206 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 2,294,854 Value ($000) $143,222 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 2,473,064 Value ($000) $142,474 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 2,652,471 Value ($000) $140,343 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 2,399,833 Value ($000) $126,760 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 2,573,307 Value ($000) $127,095 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 2,458,146 Value ($000) $139,942 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 3,163,951 Value ($000) $181,865 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 3,716,286 Value ($000) $211,049 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 3,825,271 Value ($000) $226,762 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 3,732,984 Value ($000) $215,952 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 3,817,509 Value ($000) $216,720 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 2,575,735 Value ($000) $128,916 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 1,499,547 Value ($000) $71,394 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 1,535,253 Value ($000) $71,313 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	783,817	$82,505	$93.24	$81.31 - $107.59
Q3 2025	494,085	$41,469	$81.01	$75.27 - $86.24
Q2 2025	238,478	$18,878	$77.39	$71.26 - $87.25
Q1 2025	220,188	$19,764	$90.12	$78.10 - $99.24
Q4 2024	355,620	$35,377	$98.70	$90.33 - $109.75
Q3 2024	450,123	$51,116	$112.96	$105.16 - $123.40
Q2 2024	454,019	$56,208	$121.72	$114.80 - $127.87
Q1 2024	223,130	$29,442	$115.77	$102.41 - $125.66
Q4 2023	50,240	$5,467	$96.81	$92.34 - $102.48
Q3 2023	10,505	$1,081	$99.84	$95.67 - $106.04
Q2 2023	10,505	$1,212	$104.47	$97.02 - $109.95
Q1 2023	10,505	$1,118	$98.68	$92.86 - $105.40
Q4 2022	10,505	$1,166	$92.80	$77.99 - $103.03
Q3 2022	10,154	$874	$80.41	$76.51 - $85.75
Q2 2022	10,154	$926	$79.21	$72.83 - $86.09
Q4 2021	10,617	$814	$69.89	$62.63 - $80.06
Q3 2021	15,197	$1,141	$66.14	$62.09 - $68.78
Q2 2021	15,197	$1,182	$64.14	$59.83 - $67.79
Q1 2021	39,139	$3,017	$63.06	$58.39 - $69.69
Q4 2020	39,139	$3,202	$64.85	$59.73 - $68.80
Q3 2020	39,139	$3,247	$65.93	$60.98 - $70.41
Q2 2020	39,139	$3,027	$62.87	$58.07 - $67.36
Q1 2020	38,755	$2,982	$65.09	$51.91 - $72.71
Q4 2019	316,246	$28,763	$67.55	$62.89 - $73.10
Q3 2019	624,134	$52,540	$65.47	$61.22 - $68.01
Q2 2019	1,011,604	$84,823	$62.14	$55.86 - $67.34
Q1 2019	1,778,886	$147,950	$60.29	$55.35 - $64.55
Q4 2018	2,186,513	$167,072	$56.50	$50.42 - $61.17
Q3 2018	2,485,962	$176,354	$50.65	$45.40 - $54.60
Q2 2018	2,737,923	$166,192	$44.52	$39.72 - $47.34
Q1 2018	2,705,801	$147,385	$42.25	$39.59 - $47.54
Q4 2017	2,804,013	$157,782	$43.00	$39.63 - $47.96
Q3 2017	3,105,609	$198,853	$46.68	$44.87 - $49.08
Q2 2017	3,081,046	$197,465	$46.54	$45.06 - $48.72
Q1 2017	2,470,303	$156,963	$46.06	$42.70 - $48.31
Q4 2016	2,840,265	$167,206	$44.08	$41.83 - $46.98
Q3 2016	2,294,854	$143,222	$43.73	$40.74 - $45.59
Q2 2016	2,473,064	$142,474	$39.48	$37.06 - $41.09
Q1 2016	2,652,471	$140,343	$36.03	$33.60 - $37.88
Q4 2015	2,399,833	$126,760	$36.77	$33.58 - $38.73
Q3 2015	2,573,307	$127,095	$38.40	$31.46 - $41.36
Q2 2015	2,458,146	$139,942	$40.23	$38.42 - $42.17
Q1 2015	3,163,951	$181,865	$40.30	$37.94 - $43.13
Q4 2014	3,716,286	$211,049	$39.35	$35.32 - $41.85
Q3 2014	3,825,271	$226,762	$39.37	$37.12 - $41.03
Q2 2014	3,732,984	$215,952	$37.96	$36.06 - $39.67
Q1 2014	3,817,509	$216,720	$35.76	$32.43 - $37.92
Q4 2013	2,575,735	$128,916	$31.29	$29.09 - $32.94
Q3 2013	1,499,547	$71,394	$30.97	$29.74 - $31.75
Q2 2013	1,535,253	$71,313	$30.02	$28.02 - $32.11