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MERC

Mercer International Inc.

Company with tickers: MERC

CIK
1333274
CUSIP
588056101
Shares Outstanding
66,982,506
13F Activity (30d)
68 filings 68 filers
Holders: 77
Total Value: $68,537,144
Total Shares: 48,265,622

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 77 13F filers · Δ vs Dec 31, 2025
Top Holder
35.7%
Jun 2023 → Mar 2026 · range 26.3% – 35.9%
−0.2 pts
Top 5
65.6%
Jun 2023 → Mar 2026 · range 55.2% – 65.6%
+0.6 pts
Top 10
80.4%
Jun 2023 → Mar 2026 · range 70.6% – 80.5%
−0.1 pts
HHI
1,574
Jun 2023 → Mar 2026 · range 999 – 1,584
Moderately concentrated −11

Quarterly Activity

vs Dec 31, 2025
New
16
Increased
18
Decreased
21
Sold Out
15
Unchanged
22
Holder count: +1
Institutional value: -27.8%
Shares held: +0.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega BARCLAYS PLC +2,580,746 3,320,081
Micro Benefit Street Partners LLC +723,686 787,371
Mid WHITEBOX ADVISORS LLC +371,639 1,057,658
Mid GSA CAPITAL PARTNERS LLP +314,716 505,490
Mega WELLS FARGO & COMPANY/MN +162,090 1,056,790

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid READYSTATE ASSET MANAGEMENT LP −1,168,159 1,383,838
Small Solas Capital Management, LLC −816,977 790,338
Mid OPPENHEIMER & CO INC −358,100 62,879
Mid WOLVERINE ASSET MANAGEMENT LLC −277,500 66,100
Mega D. E. Shaw & Co., Inc. −270,695 615,223

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega FRANKLIN RESOURCES INC 787,371 $1,118,066
Mega VANGUARD CAPITAL MANAGEMENT LLC 477,644 $678,254
Mega VANGUARD FIDUCIARY TRUST CO 217,648 $309,060
Large Empowered Funds, LLC 151,736 $215,465
Large MARSHALL WACE, LLP 140,803 $199,940

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Small Diameter Capital Partners LP 1,100,397 $2,178,786
Mega VANGUARD GROUP INC 828,440 $1,640,311
Mega JANE STREET GROUP, LLC 125,171 $247,837
Large Qube Research & Technologies Ltd 51,970 $102,900
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 42,610 $84,367
Filter: New 16 Increased 18 Reduced 21 Sold out 15 Unchanged 22
78 of 78 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small IAT REINSURANCE CO LTD. Insurance $24,452,400 35.68% 17,220,000
Small REDWOOD CAPITAL MANAGEMENT, LLC $6,600,348 9.63% 4,648,133
Mega BARCLAYS PLC $4,714,514 6.88% 3,320,081
Large TORONTO DOMINION BANK Bank $4,686,000 6.84% 3,300,000
Mid Atlas FRM LLC $4,472,999 6.53% 3,150,000
Mega DIMENSIONAL FUND ADVISORS LP $3,626,800 5.29% 2,554,086
Mid READYSTATE ASSET MANAGEMENT LP $1,965,049 2.87% 1,383,838
Mega BlackRock, Inc. $1,564,812 2.28% 1,101,981
Mid WHITEBOX ADVISORS LLC $1,501,874 2.19% 1,057,658
Mega WELLS FARGO & COMPANY/MN $1,500,641 2.19% 1,056,790
Mega AMERICAN CENTURY COMPANIES INC $1,437,882 2.10% 1,012,593
Small Solas Capital Management, LLC $1,122,279 1.64% 790,338
Mega FRANKLIN RESOURCES INC $1,118,066 1.63% 787,371
Micro Benefit Street Partners LLC $1,118,066 1.63% 787,371
Mega D. E. Shaw & Co., Inc. $873,616 1.27% 615,223
Mid GSA CAPITAL PARTNERS LLP $717,795 1.05% 505,490
Mega GEODE CAPITAL MANAGEMENT, LLC $679,078 0.99% 478,224
Mega VANGUARD CAPITAL MANAGEMENT LLC $678,254 0.99% 477,644
Large Verition Fund Management LLC $579,810 0.85% 408,317
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $552,165 0.81% 388,849
Small AEGIS FINANCIAL CORP $438,676 0.64% 308,927
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $353,929 0.52% 249,246
Mega VANGUARD FIDUCIARY TRUST CO Bank $309,060 0.45% 217,648
Mega STATE STREET CORP $306,880 0.45% 216,113
Mega UBS Group AG $247,179 0.36% 174,070
Mega CITADEL ADVISORS LLC $234,780 0.34% 165,339
Large Empowered Funds, LLC $215,465 0.31% 151,736
Large Cerity Partners LLC $213,113 0.31% 150,080
Small Merrion Investment Management Co, LLC $213,000 0.31% 150,000
Large MARSHALL WACE, LLP $199,940 0.29% 140,803
Mid Graham Capital Management, L.P. $192,533 0.28% 135,587
Mega NORTHERN TRUST CORP Bank $169,234 0.25% 119,180
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $165,249 0.24% 116,373
Mid XTX Topco Ltd $90,121 0.13% 63,466
Mid OPPENHEIMER & CO INC $89,288 0.13% 62,879
Mega GOLDMAN SACHS GROUP INC $86,877 0.13% 61,181
Large Assenagon Asset Management S.A. $83,629 0.12% 58,894
Large TUDOR INVESTMENT CORP ET AL $80,208 0.12% 56,485
Small SHUFRO ROSE & CO LLC $77,390 0.11% 54,500
Mid Engineers Gate Manager LP $73,824 0.11% 51,989
Mid Susquehanna Portfolio Strategies, LLC $69,524 0.10% 48,961
Mid WOLVERINE ASSET MANAGEMENT LLC $55,948 0.08% 39,400
Mega Invesco Ltd. $55,788 0.08% 39,288
Small Net Worth Advisory Group $46,265 0.07% 32,581
Mid Beacon Pointe Advisors, LLC $45,182 0.07% 31,819
Small R Squared Ltd $42,558 0.06% 29,971
Mid WOLVERINE ASSET MANAGEMENT LLC $37,914 0.06% 26,700
Large Point72 Asset Management, L.P. $30,811 0.04% 21,698
Large Centiva Capital, LP $29,722 0.04% 20,931
Small Daytona Street Capital LLC $28,400 0.04% 20,000
Large Squarepoint Ops LLC $26,294 0.04% 18,517
Mega JPMORGAN CHASE & CO $26,227 0.04% 18,470
Mega PRICE T ROWE ASSOCIATES INC /MD/ $25,075 0.04% 17,659
Mid Virtu Financial LLC $23,868 0.03% 16,809
Mega LPL Financial LLC $23,512 0.03% 16,558
Large RENAISSANCE TECHNOLOGIES LLC $22,735 0.03% 16,011
Mid KESTRA PRIVATE WEALTH SERVICES, LLC $22,720 0.03% 16,000
Mega Vanguard Global Advisers, LLC $21,082 0.03% 14,847
Mega FMR LLC $14,948 0.02% 10,527
Large Jain Global LLC $14,448 0.02% 10,175
Small Joel Isaacson & Co., LLC $14,200 0.02% 10,000
Mid Arax Advisory Partners $13,343 0.02% 9,397
Large TD Waterhouse Canada Inc. $12,212 0.02% 8,600
Mega MORGAN STANLEY $9,498 0.01% 6,690
Mega ROYAL BANK OF CANADA Bank $6,532 0.01% 4,600
Large NATIONAL BANK OF CANADA /FI/ Bank $4,544 0.01% 3,200
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $3,619 0.01% 2,549
Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $2,698 0.00% 1,900
Mega RHUMBLINE ADVISERS $1,881 0.00% 1,325
Micro Olistico Wealth, LLC $1,072 0.00% 755
Mega BNP PARIBAS ARBITRAGE, SA $634 0.00% 447
Mid SBI Securities Co., Ltd. Broker-Dealer $583 0.00% 411
Small Transamerica Financial Advisors, LLC $231 0.00% 163
Mid Advisory Services Network, LLC $139 0.00% 98
Mid Farther Finance Advisors, LLC $62 0.00% 44
Large CWM, LLC $32 0.00% 23
Mid Intesa Sanpaolo S.p.A. $19 0.00% 14
Small Caitong International Asset Management Co., Ltd $1 0.00% 1

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