WESCO INTL INC

Ticker: WCC CUSIP: 95082P105 Class: EQTY

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q4 2025

Shares 78,576 Value ($000) $19,223 Avg Close $244.94 Range $207.05 - $278.58

Q3 2025

Shares 93,635 Value ($000) $19,804 Avg Close $209.31 Range $182.32 - $227.51

Q2 2025

Shares 90,008 Value ($000) $16,669 Avg Close $163.95 Range $124.43 - $187.78

Q1 2025

Shares 97,679 Value ($000) $15,170 Avg Close $177.37 Range $148.23 - $201.06

Q4 2024

Shares 98,501 Value ($000) $17,825 Avg Close $187.01 Range $160.54 - $213.74

Q3 2024

Shares 99,290 Value ($000) $16,679 Avg Close $160.18 Range $141.08 - $181.54

Q2 2024

Shares 112,031 Value ($000) $17,759 Avg Close $167.53 Range $148.85 - $188.89

Q1 2024

Shares 103,263 Value ($000) $17,687 Avg Close $162.23 Range $129.90 - $191.78

Q4 2023

Shares 106,790 Value ($000) $18,569 Avg Close $146.77 Range $119.75 - $176.30

Q3 2023

Shares 108,541 Value ($000) $15,610 Avg Close $157.78 Range $140.60 - $180.93

Q2 2023

Shares 236,585 Value ($000) $42,363 Avg Close $142.14 Range $118.81 - $175.90

Q1 2023

Shares 298,119 Value ($000) $46,071 Avg Close $145.73 Range $118.15 - $170.13

Q4 2022

Shares 330,659 Value ($000) $41,399 Avg Close $122.40 Range $110.83 - $139.77

Q3 2022

Shares 338,996 Value ($000) $40,469 Avg Close $121.63 Range $96.25 - $142.96

Q2 2022

Shares 367,159 Value ($000) $39,323 Avg Close $119.80 Range $97.81 - $140.41

Q1 2022

Shares 373,680 Value ($000) $48,631 Avg Close $121.82 Range $102.53 - $135.13

Q4 2021

Shares 464,950 Value ($000) $61,183 Avg Close $124.32 Range $111.88 - $137.00

Q3 2021

Shares 491,922 Value ($000) $56,728 Avg Close $107.14 Range $91.19 - $117.82

Q2 2021

Shares 654,444 Value ($000) $67,290 Avg Close $96.68 Range $79.88 - $109.95

Q1 2021

Shares 705,360 Value ($000) $61,035 Avg Close $81.82 Range $68.53 - $92.54

Q4 2020

Shares 997,831 Value ($000) $78,330 Avg Close $57.60 Range $38.35 - $77.34

Q3 2020

Shares 828,575 Value ($000) $36,474 Avg Close $41.50 Range $31.15 - $48.48

Q2 2020

Shares 427,218 Value ($000) $15,000 Avg Close $29.05 Range $19.79 - $41.28

Q1 2020

Shares 287,140 Value ($000) $6,561 Avg Close $41.44 Range $13.14 - $59.61

Q4 2019

Shares 337,701 Value ($000) $20,056 Avg Close $50.70 Range $42.75 - $59.32

Q3 2019

Shares 464,292 Value ($000) $22,179 Avg Close $45.76 Range $40.86 - $50.82

Q2 2019

Shares 525,468 Value ($000) $26,615 Avg Close $50.86 Range $45.12 - $56.33

Q1 2019

Shares 555,285 Value ($000) $29,436 Avg Close $51.41 Range $45.18 - $55.16

Q4 2018

Shares 545,607 Value ($000) $26,189 Avg Close $50.47 Range $42.72 - $60.24

Q3 2018

Shares 545,655 Value ($000) $33,531 Avg Close $58.23 Range $54.39 - $61.44

Q2 2018

Shares 395,759 Value ($000) $22,598 Avg Close $58.92 Range $53.76 - $62.71

Q1 2018

Shares 409,539 Value ($000) $25,412 Avg Close $62.62 Range $57.46 - $67.42

Q4 2017

Shares 388,801 Value ($000) $26,497 Avg Close $60.77 Range $55.66 - $67.42

Q3 2017

Shares 399,583 Value ($000) $23,276 Avg Close $52.27 Range $47.59 - $58.82

Q2 2017

Shares 391,023 Value ($000) $22,406 Avg Close $60.35 Range $52.11 - $68.98

Q1 2017

Shares 391,738 Value ($000) $27,245 Avg Close $68.14 Range $62.46 - $74.03

Q4 2016

Shares 379,977 Value ($000) $25,287 Avg Close $61.73 Range $50.02 - $71.36

Q3 2016

Shares 307,926 Value ($000) $18,934 Avg Close $55.72 Range $48.29 - $62.12

Q2 2016

Shares 290,587 Value ($000) $14,962 Avg Close $54.72 Range $49.23 - $60.92

Q1 2016

Shares 281,791 Value ($000) $15,406 Avg Close $43.22 Range $33.05 - $54.36

Q4 2015

Shares 264,276 Value ($000) $11,544 Avg Close $45.31 Range $38.52 - $50.81

Q3 2015

Shares 249,609 Value ($000) $11,599 Avg Close $56.26 Range $44.20 - $67.63

Q2 2015

Shares 593,576 Value ($000) $40,743 Avg Close $69.71 Range $64.66 - $72.53

Q1 2015

Shares 579,561 Value ($000) $40,506 Avg Close $67.30 Range $63.56 - $75.25

Q4 2014

Shares 888,407 Value ($000) $67,705 Avg Close $76.51 Range $67.05 - $84.50

Q3 2014

Shares 1,063,616 Value ($000) $83,239 Avg Close $80.41 Range $76.00 - $85.85

Q2 2014

Shares 981,089 Value ($000) $84,746 Avg Close $84.84 Range $81.16 - $90.48

Q1 2014

Shares 1,029,951 Value ($000) $85,713 Avg Close $83.35 Range $76.34 - $92.11

Q4 2013

Shares 1,688,718 Value ($000) $153,792 Avg Close $81.07 Range $71.61 - $89.07

Q3 2013

Shares 1,779,013 Value ($000) $136,148 Avg Close $72.11 Range $63.42 - $78.07

Q2 2013

Shares 1,717,207 Value ($000) $116,701 Avg Close $69.34 Range $62.47 - $77.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	78,576	$19,223	$244.94	$207.05 - $278.58
Q3 2025	93,635	$19,804	$209.31	$182.32 - $227.51
Q2 2025	90,008	$16,669	$163.95	$124.43 - $187.78
Q1 2025	97,679	$15,170	$177.37	$148.23 - $201.06
Q4 2024	98,501	$17,825	$187.01	$160.54 - $213.74
Q3 2024	99,290	$16,679	$160.18	$141.08 - $181.54
Q2 2024	112,031	$17,759	$167.53	$148.85 - $188.89
Q1 2024	103,263	$17,687	$162.23	$129.90 - $191.78
Q4 2023	106,790	$18,569	$146.77	$119.75 - $176.30
Q3 2023	108,541	$15,610	$157.78	$140.60 - $180.93
Q2 2023	236,585	$42,363	$142.14	$118.81 - $175.90
Q1 2023	298,119	$46,071	$145.73	$118.15 - $170.13
Q4 2022	330,659	$41,399	$122.40	$110.83 - $139.77
Q3 2022	338,996	$40,469	$121.63	$96.25 - $142.96
Q2 2022	367,159	$39,323	$119.80	$97.81 - $140.41
Q1 2022	373,680	$48,631	$121.82	$102.53 - $135.13
Q4 2021	464,950	$61,183	$124.32	$111.88 - $137.00
Q3 2021	491,922	$56,728	$107.14	$91.19 - $117.82
Q2 2021	654,444	$67,290	$96.68	$79.88 - $109.95
Q1 2021	705,360	$61,035	$81.82	$68.53 - $92.54
Q4 2020	997,831	$78,330	$57.60	$38.35 - $77.34
Q3 2020	828,575	$36,474	$41.50	$31.15 - $48.48
Q2 2020	427,218	$15,000	$29.05	$19.79 - $41.28
Q1 2020	287,140	$6,561	$41.44	$13.14 - $59.61
Q4 2019	337,701	$20,056	$50.70	$42.75 - $59.32
Q3 2019	464,292	$22,179	$45.76	$40.86 - $50.82
Q2 2019	525,468	$26,615	$50.86	$45.12 - $56.33
Q1 2019	555,285	$29,436	$51.41	$45.18 - $55.16
Q4 2018	545,607	$26,189	$50.47	$42.72 - $60.24
Q3 2018	545,655	$33,531	$58.23	$54.39 - $61.44
Q2 2018	395,759	$22,598	$58.92	$53.76 - $62.71
Q1 2018	409,539	$25,412	$62.62	$57.46 - $67.42
Q4 2017	388,801	$26,497	$60.77	$55.66 - $67.42
Q3 2017	399,583	$23,276	$52.27	$47.59 - $58.82
Q2 2017	391,023	$22,406	$60.35	$52.11 - $68.98
Q1 2017	391,738	$27,245	$68.14	$62.46 - $74.03
Q4 2016	379,977	$25,287	$61.73	$50.02 - $71.36
Q3 2016	307,926	$18,934	$55.72	$48.29 - $62.12
Q2 2016	290,587	$14,962	$54.72	$49.23 - $60.92
Q1 2016	281,791	$15,406	$43.22	$33.05 - $54.36
Q4 2015	264,276	$11,544	$45.31	$38.52 - $50.81
Q3 2015	249,609	$11,599	$56.26	$44.20 - $67.63
Q2 2015	593,576	$40,743	$69.71	$64.66 - $72.53
Q1 2015	579,561	$40,506	$67.30	$63.56 - $75.25
Q4 2014	888,407	$67,705	$76.51	$67.05 - $84.50
Q3 2014	1,063,616	$83,239	$80.41	$76.00 - $85.85
Q2 2014	981,089	$84,746	$84.84	$81.16 - $90.48
Q1 2014	1,029,951	$85,713	$83.35	$76.34 - $92.11
Q4 2013	1,688,718	$153,792	$81.07	$71.61 - $89.07
Q3 2013	1,779,013	$136,148	$72.11	$63.42 - $78.07
Q2 2013	1,717,207	$116,701	$69.34	$62.47 - $77.00