클리어워터 페이퍼 코퍼레이션
US ˙ NYSE ˙ US18538R1032

SecurityCLW / Clearwater Paper Corporation
InstitutionGroup One Trading, L.p.
Latest Disclosed Ownership10,556 shares
Latest Disclosed Value $ 183,674
Group One Trading, L.p. ownership in CLW / Clearwater Paper Corporation

On February 11, 2026 - Group One Trading, L.p. filed a 13F-HR form disclosing ownership of 10,556 shares of Clearwater Paper Corporation (US:CLW) valued at $183,674 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 12, 2025 disclosing 13,620 shares of Clearwater Paper Corporation. This represents a change in shares of -22.50% during the quarter. The current value of the position is $162,457 USD.

Group One Trading, L.p. has a history of taking positions in derivatives of the underlying security (CLW) in the form of stock options. The firm currently holds call options representing 8,900 of underlying shares valued at $154,860 USD and put options representing 18,200 of underlying shares valued at $316,680 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CLW / Clearwater Paper Corporation Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-02-11 2025-12-31 13F CLEARWATER PAPER COM 18538R103 10,556 -3,064 -22.50 184 -35.11 0.0003
2025-11-12 2025-09-30 13F CLEARWATER PAPER COM 18538R103 13,620 12,133 815.94 283 605.00 0.0005
2025-08-14 2025-06-30 13F CLEARWATER PAPER COM 18538R103 1,487 -43,099 -96.66 41 -96.46 0.0001
2025-05-14 2025-03-31 13F CLEARWATER PAPER COM 18538R103 44,586 17,270 63.22 1,131 39.11 0.0033
2025-05-14 2024-12-31 13F/A-1 CLEARWATER PAPER COM 18538R103 27,316 25,598 1,489.99 813 1,559.18 0.0019
2025-02-14 2024-12-31 13F CLEARWATER PAPER COM 18538R103 27,316 25,598 813 0.0020
2024-11-14 2024-09-30 13F CLEARWATER PAPER COM 18538R103 1,718 1,574 1,093.06 49 716.67 0.0001
2024-08-14 2024-06-30 13F CLEARWATER PAPER COM 18538R103 144 144 7 0.0000
2024-02-14 2023-12-31 13F CLEARWATER PAPER COM 18538R103 0 -6,312 -100.00 0 -100.00
2023-11-09 2023-09-30 13F CLEARWATER PAPER COM 18538R103 6,312 5,908 1,462.38 229 1,800.00 0.0008
2023-08-09 2023-06-30 13F CLEARWATER PAPER COM 18538R103 404 404 13 0.0000
2023-05-12 2023-03-31 13F CLEARWATER PAPER COM 18538R103 0 -1,875 -100.00 0 -100.00
2023-02-09 2022-12-31 13F CLEARWATER PAPER COM 18538R103 1,875 1,875 71 0.0002
2022-08-11 2022-06-30 13F CLEARWATER PAPER COM 18538R103 0 -10,019 -100.00 0 -100.00
2022-05-12 2022-03-31 13F CLEARWATER PAPER COM 18538R103 10,019 -63,988 -86.46 281 -89.65 0.0003
2022-02-11 2021-12-31 13F CLEARWATER PAPER COM 18538R103 74,007 51,166 224.01 2,714 209.82 0.0022
2021-11-12 2021-09-30 13F CLEARWATER PAPER COM 18538R103 22,841 21,206 1,297.00 876 1,763.83 0.0009
2021-08-10 2021-06-30 13F CLEARWATER PAPER COM 18538R103 1,635 1,635 47 0.0001
2021-02-10 2020-12-31 13F CLEARWATER PAPER COM 18538R103 0 -69,750 -100.00 0 -100.00
2020-11-12 2020-09-30 13F CLEARWATER PAPER COM 18538R103 69,750 61,312 726.62 2,646 767.54 0.0083
2020-08-13 2020-06-30 13F CLEARWATER PAPER COM 18538R103 8,438 -7,799 -48.03 305 -13.84 0.0014
2020-05-13 2020-03-31 13F CLEARWATER PAPER COM 18538R103 16,237 -34,486 -67.99 354 -67.31 0.0029
2020-02-10 2019-12-31 13F CLEARWATER PAPER COM 18538R103 50,723 12,499 32.70 1,083 34.20 0.0074
2019-11-12 2019-09-30 13F CLEARWATER PAPER COM 18538R103 38,224 7,559 24.65 807 42.33 0.0065
2019-08-09 2019-06-30 13F CLEARWATER PAPER COM 18538R103 30,665 26,681 669.70 567 626.92 0.0051
2019-05-14 2019-03-31 13F/A-1 CLEARWATER PAPER COM 18538R103 3,984 3,984 -87.01 78 -86.24 0.0009
2019-05-13 2019-03-31 13F CLEARWATER PAPER COM 18538R103 3,984 3,984 78
2019-02-05 2018-12-31 13F CLEARWATER PAPER COM 18538R103 0 -2,456 -100.00 0 -100.00
2018-11-08 2018-09-30 13F CLEARWATER PAPER COM 18538R103 2,456 1,186 93.39 73 151.72 0.0006
2018-08-13 2018-06-30 13F CLEARWATER PAPER COM 18538R103 1,270 1,270 29 0.0002
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-11 2025-12-31 13F CLEARWATER PAPER COM Call 8,900 493.33 155 396.77 n/a n/a n/a
2025-11-12 2025-09-30 13F CLEARWATER PAPER COM Call 1,500 -28.57 31 -45.61 n/a n/a n/a
2025-08-14 2025-06-30 13F CLEARWATER PAPER COM Call 2,100 -97.10 57 -96.90 n/a n/a n/a
2025-05-14 2025-03-31 13F CLEARWATER PAPER COM Call 72,500 111.99 1,839 80.65 n/a n/a n/a
2025-05-14 2024-12-31 13F/A CLEARWATER PAPER COM Call 34,200 442.86 1,018 468.72 n/a n/a n/a
2025-02-14 2024-12-31 13F CLEARWATER PAPER COM Call 34,200 1,018 n/a n/a n/a
2024-11-14 2024-09-30 13F CLEARWATER PAPER COM Call 6,300 6,200.00 180 4,375.00 n/a n/a n/a
2024-08-14 2024-06-30 13F CLEARWATER PAPER COM Call 100 -99.70 5 -99.73 n/a n/a n/a
2024-05-10 2024-03-31 13F CLEARWATER PAPER COM Call 33,800 789.47 1,478 978.83 n/a n/a n/a
2024-02-14 2023-12-31 13F CLEARWATER PAPER COM Call 3,800 3,700.00 137 4,466.67 n/a n/a n/a
2023-11-09 2023-09-30 13F CLEARWATER PAPER COM Call 100 -98.91 4 -98.96 n/a n/a n/a
2023-08-09 2023-06-30 13F CLEARWATER PAPER COM Call 9,200 27.78 288 20.00 n/a n/a n/a
2023-05-12 2023-03-31 13F CLEARWATER PAPER COM Call 7,200 -70.49 241 -73.97 n/a n/a n/a
2023-02-09 2022-12-31 13F CLEARWATER PAPER COM Call 24,400 6.55 923 7.08 n/a n/a n/a
2022-11-09 2022-09-30 13F CLEARWATER PAPER COM Call 22,900 72.18 861 92.62 n/a n/a n/a
2022-08-11 2022-06-30 13F CLEARWATER PAPER COM Call 13,300 786.67 447 964.29 n/a n/a n/a
2022-05-12 2022-03-31 13F CLEARWATER PAPER COM Call 1,500 -98.27 42 -98.68 n/a n/a n/a
2022-02-11 2021-12-31 13F CLEARWATER PAPER COM Call 86,600 16.40 3,176 11.36 n/a n/a n/a
2021-11-12 2021-09-30 13F CLEARWATER PAPER COM Call 74,400 520.00 2,852 719.54 n/a n/a n/a
2021-08-10 2021-06-30 13F CLEARWATER PAPER COM Call 12,000 -6.25 348 -27.80 n/a n/a n/a
2021-05-12 2021-03-31 13F CLEARWATER PAPER COM Call 12,800 -28.09 482 -28.27 n/a n/a n/a
2021-02-10 2020-12-31 13F CLEARWATER PAPER COM Call 17,800 -86.48 672 -86.55 n/a n/a n/a
2020-11-12 2020-09-30 13F CLEARWATER PAPER COM Call 131,700 187.55 4,997 201.93 n/a n/a n/a
2020-08-13 2020-06-30 13F CLEARWATER PAPER COM Call 45,800 46.33 1,655 142.31 n/a n/a n/a
2020-05-13 2020-03-31 13F CLEARWATER PAPER COM Call 31,300 2,508.33 683 2,526.92 n/a n/a n/a
2020-02-10 2019-12-31 13F CLEARWATER PAPER COM Call 1,200 -82.86 26 -82.43 n/a n/a n/a
2019-11-12 2019-09-30 13F CLEARWATER PAPER COM Call 7,000 -71.89 148 -67.83 n/a n/a n/a
2019-08-09 2019-06-30 13F CLEARWATER PAPER COM Call 24,900 -12.32 460 -16.82 n/a n/a n/a
2019-05-14 2019-03-31 13F/A CLEARWATER PAPER COM Call 28,400 1,320.00 553 1,028.57 n/a n/a n/a
2019-05-13 2019-03-31 13F CLEARWATER PAPER COM Call 28,400 553 n/a n/a n/a
2019-02-05 2018-12-31 13F CLEARWATER PAPER COM Call 2,000 -79.17 49 -82.81 n/a n/a n/a
2018-11-08 2018-09-30 13F CLEARWATER PAPER COM Call 9,600 -38.06 285 -20.39 n/a n/a n/a
2018-08-13 2018-06-30 13F CLEARWATER PAPER COM Call 15,500 358 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-11 2025-12-31 13F CLEARWATER PAPER COM Put 18,200 20.53 317 0.96 n/a n/a n/a
2025-11-12 2025-09-30 13F CLEARWATER PAPER COM Put 15,100 313 n/a n/a n/a
2025-08-14 2025-06-30 13F CLEARWATER PAPER COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-14 2025-03-31 13F CLEARWATER PAPER COM Put 34,600 44.77 878 23.35 n/a n/a n/a
2025-05-14 2024-12-31 13F/A CLEARWATER PAPER COM Put 23,900 712 n/a n/a n/a
2025-02-14 2024-12-31 13F CLEARWATER PAPER COM Put 23,900 712 n/a n/a n/a
2023-11-09 2023-09-30 13F CLEARWATER PAPER COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-09 2023-06-30 13F CLEARWATER PAPER COM Put 200 6 n/a n/a n/a
2022-08-11 2022-06-30 13F CLEARWATER PAPER COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-12 2022-03-31 13F CLEARWATER PAPER COM Put 40,600 -56.85 1,138 -67.02 n/a n/a n/a
2022-02-11 2021-12-31 13F CLEARWATER PAPER COM Put 94,100 -21.58 3,451 -24.98 n/a n/a n/a
2021-11-12 2021-09-30 13F CLEARWATER PAPER COM Put 120,000 2,122.22 4,600 2,848.72 n/a n/a n/a
2021-08-10 2021-06-30 13F CLEARWATER PAPER COM Put 5,400 -71.58 156 -78.18 n/a n/a n/a
2021-05-12 2021-03-31 13F CLEARWATER PAPER COM Put 19,000 36.69 715 36.19 n/a n/a n/a
2021-02-10 2020-12-31 13F CLEARWATER PAPER COM Put 13,900 2.96 525 2.54 n/a n/a n/a
2020-11-12 2020-09-30 13F CLEARWATER PAPER COM Put 13,500 -56.73 512 -54.57 n/a n/a n/a
2020-08-13 2020-06-30 13F CLEARWATER PAPER COM Put 31,200 -5.74 1,127 56.09 n/a n/a n/a
2020-05-13 2020-03-31 13F CLEARWATER PAPER COM Put 33,100 298.80 722 307.91 n/a n/a n/a
2020-02-10 2019-12-31 13F CLEARWATER PAPER COM Put 8,300 -39.86 177 -30.59 n/a n/a n/a
2019-08-09 2019-06-30 13F CLEARWATER PAPER COM Put 13,800 -35.21 255 -38.55 n/a n/a n/a
2019-05-14 2019-03-31 13F/A CLEARWATER PAPER COM Put 21,300 -2.29 415 -21.85 n/a n/a n/a
2019-05-13 2019-03-31 13F CLEARWATER PAPER COM Put 21,300 415 n/a n/a n/a
2019-02-05 2018-12-31 13F CLEARWATER PAPER COM Put 21,800 29.76 531 6.41 n/a n/a n/a
2018-11-08 2018-09-30 13F CLEARWATER PAPER COM Put 16,800 380.00 499 516.05 n/a n/a n/a
2018-08-13 2018-06-30 13F CLEARWATER PAPER COM Put 3,500 81 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.