CSX Corporation
US ˙ NasdaqGS ˙ US1264081035

SecurityCSX / CSX Corporation
InstitutionWalleye Capital LLC
Latest Disclosed Ownership1,067,087 shares
Latest Disclosed Value $ 43,803,921
Walleye Capital LLC ownership in CSX / CSX Corporation

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 1,067,087 shares of CSX Corporation (US:CSX) valued at $43,803,921 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 702,542 shares of CSX Corporation. This represents a change in shares of 51.89% during the quarter. The current value of the position is $49,555,520 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (CSX) in the form of stock options. The firm currently holds call options representing 99,300 of underlying shares valued at $4,076,265 USD and put options representing 30,100 of underlying shares valued at $1,235,605 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.

CSX / CSX 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)
2026-05-13 2026-03-31 13F/A-1 CSX COM 126408103 1,067,087 364,545 51.89 43,804 72.00 0.1823
2026-05-08 2026-03-31 13F CSX COM 126408103 1,067,087 364,545 43,804 0.1821
2026-02-13 2025-12-31 13F CSX COM 126408103 702,542 678,929 2,875.23 25,467 2,939.02 0.0781
2025-11-14 2025-09-30 13F CSX COM 126408103 23,613 9,016 61.77 838 76.05 0.0031
2025-08-13 2025-06-30 13F CSX COM 126408103 14,597 -20,115 -57.95 476 -53.38 0.0018
2025-05-14 2025-03-31 13F CSX COM 126408103 34,712 -121,517 -77.78 1,022 -79.75 0.0046
2025-02-13 2024-12-31 13F CSX COM 126408103 156,229 123,720 380.57 5,042 349.29 0.0123
2024-11-14 2024-09-30 13F CSX COM 126408103 32,509 -932,706 -96.63 1,123 -96.52 0.0023
2024-08-14 2024-06-30 13F CSX COM 126408103 965,215 753,509 355.92 32,286 311.44 0.0576
2024-05-15 2024-03-31 13F CSX COM 126408103 211,706 -60,873 -22.33 7,848 -16.96 0.0140
2024-02-14 2023-12-31 13F CSX COM 126408103 272,579 -282,239 -50.87 9,450 -44.61 0.0200
2023-11-21 2023-09-30 13F/A-1 CSX COM 126408103 554,818 345,325 164.84 17,061 138.84 0.0436
2023-11-14 2023-09-30 13F CSX COM 126408103 554,818 345,325 17,061 0.0439
2023-08-14 2023-06-30 13F CSX COM 126408103 209,493 209,493 7,144 0.0259
2023-05-15 2023-03-31 13F CSX COM 126408103 0 -46,726 -100.00 0 -100.00
2023-02-14 2022-12-31 13F CSX COM 126408103 46,726 -191,365 -80.37 1,448 -77.19 0.0264
2022-11-14 2022-09-30 13F CSX COM 126408103 238,091 65,605 38.03 6,343 26.56 0.1210
2022-08-19 2022-06-30 13F/A-1 CSX COM 126408103 172,486 158,195 1,106.96 5,012 836.82 0.1381
2022-08-08 2022-06-30 13F CSX COM 126408103 172,486 158,195 5,012 0.1381
2022-05-27 2022-03-31 13F/A-01 CSX COM 126408103 14,291 14,291 535 0.0143
2022-05-16 2022-03-31 13F CSX COM 126408103 14,291 14,291 535 0.0109
2021-05-17 2021-03-31 13F CSX COM 126408103 0 -3,000 -100.00 0 -100.00
2021-02-16 2020-12-31 13F CSX COM 126408103 3,000 3,000 272 0.0182
2019-08-14 2019-06-30 13F CSX COM 126408103 0 -2,533 -100.00 0 -100.00
2019-08-14 2019-03-31 13F/A-1 CSX COM 126408103 2,533 2,533 190 0.0313
2019-05-15 2019-03-31 13F CSX COM 126408103 2,533 190
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
(%)
2026-05-13 2026-03-31 13F/A CSX COM Call 99,300 -21.81 4,076 -11.45 n/a n/a n/a
2026-05-08 2026-03-31 13F CSX COM Call 99,300 4,076 n/a n/a n/a
2026-02-13 2025-12-31 13F CSX COM Call 127,000 23.66 4,604 26.25 n/a n/a n/a
2025-11-14 2025-09-30 13F CSX COM Call 102,700 421.32 3,647 467.91 n/a n/a n/a
2025-08-13 2025-06-30 13F CSX COM Call 19,700 -66.09 643 -62.43 n/a n/a n/a
2025-05-14 2025-03-31 13F CSX COM Call 58,100 -59.34 1,710 -62.94 n/a n/a n/a
2025-02-13 2024-12-31 13F CSX COM Call 142,900 -38.03 4,611 -42.09 n/a n/a n/a
2024-11-14 2024-09-30 13F CSX COM Call 230,600 40.70 7,963 45.24 n/a n/a n/a
2024-08-14 2024-06-30 13F CSX COM Call 163,900 -30.34 5,482 -37.15 n/a n/a n/a
2024-05-15 2024-03-31 13F CSX COM Call 235,300 413.76 8,723 449.59 n/a n/a n/a
2024-02-14 2023-12-31 13F CSX COM Call 45,800 -51.22 1,588 -45.03 n/a n/a n/a
2023-11-21 2023-09-30 13F/A CSX COM Call 93,900 -49.30 2,887 -54.28 n/a n/a n/a
2023-11-14 2023-09-30 13F CSX COM Call 93,900 2,887 n/a n/a n/a
2023-08-14 2023-06-30 13F CSX COM Call 185,200 6,315 n/a n/a n/a
2019-11-14 2019-09-30 13F CSX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F CSX COM Call 10,300 171.05 797 180.63 n/a n/a n/a
2019-08-14 2019-03-31 13F/A CSX COM Call 3,800 284 n/a n/a n/a
2019-05-15 2019-03-31 13F CSX COM Call 3,800 284 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
(%)
2026-05-13 2026-03-31 13F/A CSX COM Put 30,100 -79.69 1,236 -77.01 n/a n/a n/a
2026-05-08 2026-03-31 13F CSX COM Put 30,100 1,236 n/a n/a n/a
2026-02-13 2025-12-31 13F CSX COM Put 148,200 29.89 5,372 32.61 n/a n/a n/a
2025-11-14 2025-09-30 13F CSX COM Put 114,100 18.36 4,052 28.81 n/a n/a n/a
2025-08-13 2025-06-30 13F CSX COM Put 96,400 78.19 3,146 97.55 n/a n/a n/a
2025-05-14 2025-03-31 13F CSX COM Put 54,100 -52.50 1,592 -56.68 n/a n/a n/a
2025-02-13 2024-12-31 13F CSX COM Put 113,900 -58.11 3,676 -60.85 n/a n/a n/a
2024-11-14 2024-09-30 13F CSX COM Put 271,900 -1.63 9,389 1.55 n/a n/a n/a
2024-08-14 2024-06-30 13F CSX COM Put 276,400 21.28 9,246 9.43 n/a n/a n/a
2024-05-15 2024-03-31 13F CSX COM Put 227,900 -21.11 8,448 -15.65 n/a n/a n/a
2024-02-14 2023-12-31 13F CSX COM Put 288,900 14.46 10,016 29.06 n/a n/a n/a
2023-11-21 2023-09-30 13F/A CSX COM Put 252,400 10.80 7,761 -0.08 n/a n/a n/a
2023-11-14 2023-09-30 13F CSX COM Put 252,400 7,761 n/a n/a n/a
2023-08-14 2023-06-30 13F CSX COM Put 227,800 3,250.00 7,768 3,726.11 n/a n/a n/a
2023-05-15 2023-03-31 13F CSX COM Put 6,800 204 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.