Olin Corporation
US ˙ NYSE ˙ US6806652052

SecurityOLN / Olin Corporation
InstitutionOarsman Capital, Inc.
Latest Disclosed Ownership28,480 shares
Latest Disclosed Value $ 846,710
Oarsman Capital, Inc. reports 48.40% decrease in ownership of OLN / Olin Corporation

On April 27, 2026 - Oarsman Capital, Inc. filed a 13F-HR form disclosing ownership of 28,480 shares of Olin Corporation (US:OLN) valued at $846,710 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 55,190 shares of Olin Corporation. This represents a change in shares of -48.40% during the quarter. The current value of the position is $710,006 USD.

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.

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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)
2026-04-27 2026-03-31 13F OLIN Stock 680665205 28,480 -26,710 -48.40 847 -26.37 0.1051
2026-02-13 2025-12-31 13F OLIN Stock 680665205 55,190 5,730 11.59 1,150 -7.04 0.1492
2025-11-21 2025-09-30 13F OLIN Stock 680665205 49,460 -4,717 -8.71 1,236 13.60 0.1733
2025-08-01 2025-06-30 13F OLIN Stock 680665205 54,177 -2,625 -4.62 1,088 -20.93 0.1707
2025-05-14 2025-03-31 13F OLIN Stock 680665205 56,802 19,762 53.35 1,377 9.99 0.2474
2025-02-13 2024-12-31 13F OLIN Stock 680665205 37,040 11,440 44.69 1,252 1.87 0.2181
2024-11-08 2024-09-30 13F OLIN Stock 680665205 25,600 -110 -0.43 1,228 1.32 0.2261
2024-08-12 2024-06-30 13F OLIN Stock 680665205 25,710 9,435 57.97 1,212 26.78 0.2654
2024-05-15 2024-03-31 13F OLIN Stock 680665205 16,275 -10 -0.06 957 8.88 0.2286
2024-02-16 2023-12-31 13F OLIN Stock 680665205 16,285 0 0.00 879 8.00 0.2332
2023-10-27 2023-09-30 13F OLIN Stock 680665205 16,285 -25 -0.15 814 -2.98 0.3401
2023-08-10 2023-06-30 13F OLIN Stock 680665205 16,310 -300 -1.81 838 -9.01 0.3669
2023-05-11 2023-03-31 13F OLIN Stock 680665205 16,610 -3,845 -18.80 922 -14.88 0.4309
2023-02-09 2022-12-31 13F OLIN Stock 680665205 20,455 -2,745 -11.83 1,083 8.74 0.5528
2022-11-10 2022-09-30 13F OLIN Stock 680665205 23,200 -10,750 -31.66 995 -36.66 0.5332
2022-08-10 2022-06-30 13F Olin COM 680665205 33,950 -7,250 -17.60 1,571 -27.07 0.7801
2022-05-11 2022-03-31 13F Olin COM 680665205 41,200 -25 -0.06 2,154 -9.15 0.8412
2022-02-10 2021-12-31 13F Olin COM 680665205 41,225 -280 -0.67 2,371 18.37 0.9348
2021-11-12 2021-09-30 13F Olin COM 680665205 41,505 -3,105 -6.96 2,003 -2.96 0.8108
2021-08-12 2021-06-30 13F Olin COM 680665205 44,610 -13,520 -23.26 2,064 -6.48 0.8200
2021-05-12 2021-03-31 13F Olin COM 680665205 58,130 -10,760 -15.62 2,207 30.44 0.9549
2021-02-11 2020-12-31 13F Olin COM 680665205 68,890 -10,140 -12.83 1,692 73.01 0.6574
2020-11-12 2020-09-30 13F Olin COM 680665205 79,030 17,850 29.18 978 39.12 0.4407
2020-08-13 2020-06-30 13F Olin COM 680665205 61,180 25,200 70.04 703 67.38 0.3474
2020-05-13 2020-03-31 13F Olin COM 680665205 35,980 -7,363 -16.99 420 -43.85 0.3879
2020-02-13 2019-12-31 13F Olin COM 680665205 43,343 -74,605 -63.25 748 -66.12 0.3419
2019-11-12 2019-09-30 13F Olin COM 680665205 117,948 -22,596 -16.08 2,208 -28.29 1.0508
2019-08-13 2019-06-30 13F Olin COM 680665205 140,544 14,126 11.17 3,079 5.26 1.3954
2019-05-14 2019-03-31 13F Olin COM 680665205 126,418 472 0.37 2,925 15.48 1.3894
2019-02-13 2018-12-31 13F Olin COM 680665205 125,946 -17,943 -12.47 2,533 -31.45 1.2980
2018-11-07 2018-09-30 13F Olin COM 680665205 143,889 19,776 15.93 3,695 3.65 1.4881
2018-08-10 2018-06-30 13F Olin COM 680665205 124,113 1,465 1.19 3,565 -4.35 1.6197
2018-05-14 2018-03-31 13F Olin COM 680665205 122,648 -1,370 -1.10 3,727 -15.54 1.6965
2018-02-08 2017-12-31 13F Olin COM 680665205 124,018 -696 -0.56 4,413 3.32 1.8996
2017-11-13 2017-09-30 13F Olin COM 680665205 124,714 3,365 2.77 4,271 16.25 1.8054
2017-08-10 2017-06-30 13F Olin COM 680665205 121,349 -490 -0.40 3,674 -8.26 1.6798
2017-05-11 2017-03-31 13F Olin COM 680665205 121,839 -22,175 -15.40 4,005 8.60 1.8641
2017-02-09 2016-12-31 13F Olin COM 680665205 144,014 -17,334 -10.74 3,688 11.39 2.3748
2016-11-10 2016-09-30 13F Olin COM 680665205 161,348 8,117 5.30 3,311 -13.01 1.6885
2016-08-12 2016-06-30 13F Olin COM 680665205 153,231 4,886 3.29 3,806 47.69 1.9781
2016-05-12 2016-03-31 13F Olin COM 680665205 148,345 148,345 2,577 1.3706
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.