Olin Corporation
US ˙ NYSE ˙ US6806652052

SecurityOLN / Olin Corporation
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership6,473 shares
Latest Disclosed Value $ 192,448
Northwestern Mutual Wealth Management Co reports 5.23% decrease in ownership of OLN / Olin Corporation

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 6,473 shares of Olin Corporation (US:OLN) valued at $192,442 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 6,830 shares of Olin Corporation. This represents a change in shares of -5.23% during the quarter. The current value of the position is $166,744 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)
2026-05-07 2026-03-31 13F OLIN COM PAR $1 680665205 6,473 -357 -5.23 192 35.21 0.0001
2026-02-10 2025-12-31 13F/A-1 OLIN COM PAR $1 680665205 6,830 -1,221 -15.17 142 -29.35 0.0001
2026-02-05 2025-12-31 13F OLIN COM PAR $1 680665205 1,339 -6,712 19 0.0000
2025-11-14 2025-09-30 13F OLIN COM PAR $1 680665205 8,051 121 1.53 201 26.42 0.0001
2025-08-13 2025-06-30 13F OLIN COM PAR $1 680665205 7,930 1,152 17.00 159 -3.05 0.0001
2025-05-14 2025-03-31 13F OLIN COM PAR $1 680665205 6,778 778 12.97 164 -18.81 0.0001
2025-02-11 2024-12-31 13F OLIN COM PAR $1 680665205 6,000 -1,546 -20.49 203 -44.20 0.0002
2024-11-12 2024-09-30 13F OLIN COM PAR $1 680665205 7,546 -4,888 -39.31 362 -38.23 0.0003
2024-08-16 2024-06-30 13F OLIN COM PAR $1 680665205 12,434 -241 -1.90 586 -21.34 0.0006
2024-05-15 2024-03-31 13F OLIN COM PAR $1 680665205 12,675 -1,248 -8.96 745 -0.80 0.0008
2024-02-13 2023-12-31 13F OLIN COM PAR $1 680665205 13,923 -12,888 -48.07 751 -43.96 0.0008
2023-11-14 2023-09-30 13F OLIN COM PAR $1 680665205 26,811 -1,229 -4.38 1,340 -6.94 0.0017
2023-08-14 2023-06-30 13F OLIN COM PAR $1 680665205 28,040 -8,580 -23.43 1,441 -29.13 0.0019
2023-05-15 2023-03-31 13F OLIN COM PAR $1 680665205 36,620 2,245 6.53 2,032 11.71 0.0028
2023-02-21 2022-12-31 13F OLIN COM PAR $1 680665205 34,375 -1,249 -3.51 1,820 19.04 0.0028
2022-11-14 2022-09-30 13F OLIN COM PAR $1 680665205 35,624 -12,446 -25.89 1,528 -31.33 0.0027
2022-08-04 2022-06-30 13F OLIN COM PAR $1 680665205 48,070 -105,527 -68.70 2,225 -72.29 0.0038
2022-05-09 2022-03-31 13F OLIN COM PAR $1 680665205 153,597 127,568 490.10 8,030 436.41 0.0129
2022-02-03 2021-12-31 13F OLIN COM PAR $1 680665205 26,029 1,965 8.17 1,497 28.94 0.0024
2021-11-15 2021-09-30 13F OLIN COM PAR $1 680665205 24,064 504 2.14 1,161 6.51 0.0021
2021-08-13 2021-06-30 13F OLIN COM PAR $1 680665205 23,560 794 3.49 1,090 26.16 0.0021
2021-05-14 2021-03-31 13F OLIN COM PAR $1 680665205 22,766 11,460 101.36 864 210.79 0.0018
2021-02-12 2020-12-31 13F OLIN COM PAR $1 680665205 11,306 11,012 3,745.58 278 6,850.00 0.0006
2020-11-13 2020-09-30 13F OLIN COM PAR $1 680665205 294 36 13.95 4 33.33 0.0000
2020-08-14 2020-06-30 13F OLIN COM PAR $1 680665205 258 -1,037 -80.08 3 -80.00 0.0000
2020-05-08 2020-03-31 13F OLIN COM PAR $1 680665205 1,295 973 302.17 15 150.00 0.0001
2020-02-13 2019-12-31 13F OLIN COM PAR $1 680665205 322 15 4.89 6 0.00 0.0000
2019-11-12 2019-09-30 13F OLIN COM PAR $1 680665205 307 0 0.00 6 -14.29 0.0000
2019-08-12 2019-06-30 13F OLIN COM PAR $1 680665205 307 -1,623 -84.09 7 -84.44 0.0000
2019-05-10 2019-03-31 13F OLIN COM PAR $1 680665205 1,930 -623 -24.40 45 -11.76 0.0002
2019-02-12 2018-12-31 13F OLIN COM PAR $1 680665205 2,553 -127 -4.74 51 -26.09 0.0003
2018-11-01 2018-09-30 13F OLIN COM PAR $1 680665205 2,680 53 2.02 69 -8.00 0.0003
2018-08-10 2018-06-30 13F OLIN COM PAR $1 680665205 2,627 328 14.27 75 7.14 0.0004
2018-05-14 2018-03-31 13F OLIN COM PAR $1 680665205 2,299 1,261 121.48 70 89.19 0.0004
2018-01-31 2017-12-31 13F OLIN COM PAR $1 680665205 1,038 453 77.44 37 85.00 0.0002
2017-11-07 2017-09-30 13F OLIN COM PAR $1 680665205 585 -1,600 -73.23 20 -69.70 0.0001
2017-08-10 2017-06-30 13F OLIN COM PAR $1 680665205 2,185 0 0.00 66 -8.33 0.0005
2017-05-09 2017-03-31 13F OLIN COM PAR $1 680665205 2,185 433 24.71 72 63.64 0.0007
2017-02-15 2016-12-31 13F OLIN COM PAR $1 680665205 1,752 1,458 495.92 44 633.33 0.0005
2016-11-14 2016-09-30 13F OLIN COM PAR $1 680665205 294 0 0.00 6 -14.29 0.0001
2016-08-29 2016-06-30 13F OLIN COM PAR $1 680665205 294 -317 -51.88 7 -36.36 0.0001
2016-05-16 2016-03-31 13F OLIN COM PAR $1 680665205 611 561 1,122.00 11 1,000.00 0.0002
2016-02-16 2015-12-31 13F OLIN COM PAR $1 680665205 50 50 0.00 1 0.0000
2015-05-15 2015-03-31 13F OLIN COM PAR $1 680665205 0 -300 -100.00 0 -100.00
2015-02-13 2014-12-31 13F OLIN COM PAR $1 680665205 300 300 134.38 7 133.33 0.0002
2013-11-14 2013-09-30 13F OLIN COM PAR $1 680665205 0 -128 -100.00 0 -100.00
2013-08-21 2013-06-30 13F/A-1 OLIN COM PAR $1 680665205 128 128 3 0.0002
2013-08-14 2013-06-30 13F OLIN COM PAR $1 680665205 31,460 753 0.0083
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.