Olin Corporation
US ˙ NYSE ˙ US6806652052

SecurityOLN / Olin Corporation
InstitutionBridgeway Capital Management Inc
Latest Disclosed Ownership664,843 shares
Latest Disclosed Value $ 19,765,782
Bridgeway Capital Management Inc ownership in OLN / Olin Corporation

On May 15, 2026 - Bridgeway Capital Management Inc filed a 13F-HR form disclosing ownership of 664,843 shares of Olin Corporation (US:OLN) valued at $19,765,782 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2024 disclosing 0 shares of Olin Corporation. The current value of the position is $16,574,536 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F OLIN COM PAR $1 680665205 664,843 664,843 19,766 0.3975
2024-08-14 2024-06-30 13F OLIN COM PAR $1 680665205 0 -53,100 -100.00 0 -100.00
2024-05-15 2024-03-31 13F OLIN COM PAR $1 680665205 53,100 -109,600 -67.36 3,122 -64.43 0.0638
2024-02-14 2023-12-31 13F OLIN COM PAR $1 680665205 162,700 6,450 4.13 8,778 12.40 0.1883
2023-11-14 2023-09-30 13F OLIN COM PAR $1 680665205 156,250 -2,450 -1.54 7,809 -4.24 0.1893
2023-08-14 2023-06-30 13F OLIN COM PAR $1 680665205 158,700 0 0.00 8,156 -7.40 0.1951
2023-05-15 2023-03-31 13F OLIN COM PAR $1 680665205 158,700 400 0.25 8,808 5.10 0.2338
2023-02-14 2022-12-31 13F OLIN COM PAR $1 680665205 158,300 10,600 7.18 8,380 32.32 0.2169
2022-11-14 2022-09-30 13F OLIN COM PAR $1 680665205 147,700 69,300 88.39 6,333 74.56 0.1696
2022-08-15 2022-06-30 13F OLIN COM PAR $1 680665205 78,400 -1,500 -1.88 3,628 -13.14 0.0829
2022-05-16 2022-03-31 13F OLIN COM PAR $1 680665205 79,900 1,500 1.91 4,177 -7.38 0.0807
2022-02-14 2021-12-31 13F OLIN COM PAR $1 680665205 78,400 78,400 4,510 0.0838
2017-05-15 2017-03-31 13F OLIN COM PAR $1 680665205 0 -52,500 -100.00 0 -100.00
2017-02-14 2016-12-31 13F OLIN COM PAR $1 680665205 52,500 -20,900 -28.47 1,345 -10.69 0.0175
2016-11-14 2016-09-30 13F OLIN COM PAR $1 680665205 73,400 0 0.00 1,506 -17.39 0.0224
2016-08-15 2016-06-30 13F OLIN COM PAR $1 680665205 73,400 0 0.00 1,823 42.98 0.0283
2016-05-16 2016-03-31 13F OLIN COM PAR $1 680665205 73,400 0 0.00 1,275 0.63 0.0214
2016-02-16 2015-12-31 13F OLIN COM PAR $1 680665205 73,400 0 0.00 1,267 2.67 0.0236
2015-11-16 2015-09-30 13F OLIN COM PAR $1 680665205 73,400 73,400 1,234 0.0258
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.