奧林公司
US ˙ NYSE ˙ US6806652052

SecurityOLN / Olin Corporation
InstitutionCss Llc/il
Latest Disclosed Ownership12,443 shares
Latest Disclosed Value $ 369,930
Css Llc/il ownership in OLN / Olin Corporation

On May 15, 2026 - Css Llc/il filed a 13F-HR form disclosing ownership of 12,443 shares of Olin Corporation (US:OLN) valued at $369,930 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 18,963 shares of Olin Corporation. This represents a change in shares of -34.38% during the quarter. The current value of the position is $310,204 USD.

Css Llc/il has a history of taking positions in derivatives of the underlying security (OLN) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 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.

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Institutional Put/Call Ratios
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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.

OLN / Olin 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)
2026-05-15 2026-03-31 13F OLIN COM PAR $1 680665205 12,443 -6,520 -34.38 370 -6.35 0.0177
2026-02-17 2025-12-31 13F OLIN COM PAR $1 680665205 18,963 18,963 395 0.0176
2025-08-14 2025-06-30 13F OLIN COM PAR $1 680665205 0 -8,280 -100.00 0 -100.00
2025-05-15 2025-03-31 13F OLIN COM PAR $1 680665205 8,280 -1,417 -14.61 201 -38.84 0.0110
2025-02-18 2024-12-31 13F OLIN COM PAR $1 680665205 9,697 -7,800 -44.58 328 -61.03 0.0145
2024-11-14 2024-09-30 13F OLIN COM PAR $1 680665205 17,497 -6,000 -25.54 840 -24.21 0.0384
2024-08-14 2024-06-30 13F OLIN COM PAR $1 680665205 23,497 13,344 131.43 1,108 85.74 0.0567
2024-05-15 2024-03-31 13F OLIN COM PAR $1 680665205 10,153 -4,566 -31.02 597 -24.94 0.0345
2024-02-14 2023-12-31 13F OLIN COM PAR $1 680665205 14,719 -2,000 -11.96 794 -4.91 0.0459
2023-11-14 2023-09-30 13F OLIN COM PAR $1 680665205 16,719 4,000 31.45 836 27.87 0.0548
2023-08-14 2023-06-30 13F OLIN COM PAR $1 680665205 12,719 1,000 8.53 654 0.46 0.0404
2023-05-15 2023-03-31 13F OLIN COM PAR $1 680665205 11,719 5,719 95.32 650 105.05 0.0429
2023-02-14 2022-12-31 13F OLIN COM PAR $1 680665205 6,000 1,000 20.00 318 48.13 0.0180
2022-11-14 2022-09-30 13F OLIN COM PAR $1 680665205 5,000 -2,500 -33.33 214 -38.33 0.0101
2022-08-15 2022-06-30 13F OLIN COM PAR $1 680665205 7,500 7,500 347 0.0141
2018-05-15 2018-03-31 13F OLIN COM PAR $1 680665205 0 -4,358 -100.00 0 -100.00
2018-02-14 2017-12-31 13F OLIN COM PAR $1 680665205 4,358 0 0.00 155 4.03 0.0076
2017-11-14 2017-09-30 13F OLIN COM PAR $1 680665205 4,358 -5,500 -55.79 149 -50.17 0.0073
2017-08-14 2017-06-30 13F OLIN COM PAR $1 680665205 9,858 0 0.00 299 -7.72 0.0145
2017-05-15 2017-03-31 13F OLIN COM PAR $1 680665205 9,858 0 0.00 324 28.57 0.0194
2017-02-14 2016-12-31 13F OLIN COM PAR $1 680665205 9,858 -5,000 -33.65 252 -17.38 0.0138
2016-11-14 2016-09-30 13F OLIN COM PAR $1 680665205 14,858 -4,000 -21.21 305 -34.83 0.0148
2016-08-15 2016-06-30 13F OLIN COM PAR $1 680665205 18,858 -1,400 -6.91 468 32.95 0.0313
2016-05-16 2016-03-31 13F OLIN COM PAR $1 680665205 20,258 -31,600 -60.94 352 -60.67 0.0216
2016-02-16 2015-12-31 13F OLIN COM PAR $1 680665205 51,858 -69,070 -57.12 895 -55.98 0.0531
2015-11-16 2015-09-30 13F OLIN COM PAR $1 680665205 120,928 120,928 2,033 0.1197
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
(%)
2025-05-15 2025-03-31 13F OLIN COM PAR $1 Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-18 2024-12-31 13F OLIN COM PAR $1 Call 11,000 -6.78 372 -34.45 n/a n/a n/a
2024-11-14 2024-09-30 13F OLIN COM PAR $1 Call 11,800 566 n/a n/a n/a
2024-08-14 2024-06-30 13F OLIN COM PAR $1 Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F OLIN COM PAR $1 Call 20,300 1,194 n/a n/a n/a
2023-11-14 2023-09-30 13F OLIN COM PAR $1 Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F OLIN COM PAR $1 Call 16,500 106.25 848 90.77 n/a n/a n/a
2023-05-15 2023-03-31 13F OLIN COM PAR $1 Call 8,000 444 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
(%)
2025-05-15 2025-03-31 13F OLIN COM PAR $1 Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-18 2024-12-31 13F OLIN COM PAR $1 Put 10,000 338 n/a n/a n/a
2018-05-15 2018-03-31 13F OLIN COM PAR $1 Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F OLIN COM PAR $1 Put 4,400 62.96 157 70.65 n/a n/a n/a
2017-11-14 2017-09-30 13F OLIN COM PAR $1 Put 2,700 -50.91 92 -44.91 n/a n/a n/a
2017-08-14 2017-06-30 13F OLIN COM PAR $1 Put 5,500 0.00 167 -7.73 n/a n/a n/a
2017-05-15 2017-03-31 13F OLIN COM PAR $1 Put 5,500 57.14 181 101.11 n/a n/a n/a
2017-02-14 2016-12-31 13F OLIN COM PAR $1 Put 3,500 -53.33 90 -41.56 n/a n/a n/a
2016-11-14 2016-09-30 13F OLIN COM PAR $1 Put 7,500 -54.55 154 -62.35 n/a n/a n/a
2016-08-15 2016-06-30 13F OLIN COM PAR $1 Put 16,500 120.00 409 214.62 n/a n/a n/a
2016-05-16 2016-03-31 13F OLIN COM PAR $1 Put 7,500 130 n/a n/a n/a
2016-02-16 2015-12-31 13F OLIN COM PAR $1 Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-16 2015-09-30 13F OLIN COM PAR $1 Put 469,500 2,247.50 7,892 1,364.19 n/a n/a n/a
2015-08-14 2015-06-30 13F OLIN COM PAR $1 Put 20,000 539 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.