Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership27,783 shares
Latest Disclosed Value $ 7,390,834
Walleye Capital LLC ownership in ECL / Ecolab Inc.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 27,783 shares of Ecolab Inc. (US:ECL) valued at $7,390,834 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 0 shares of Ecolab Inc.. The current value of the position is $7,167,181 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (ECL) in the form of stock options. The firm currently holds call options representing 900 of underlying shares valued at $239,418 USD and put options representing 1,700 of underlying shares valued at $452,234 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.

ECL / Ecolab Inc. 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 ECOLAB COM 278865100 27,783 27,783 7,391 0.0308
2026-05-08 2026-03-31 13F ECOLAB COM 278865100 27,783 27,783 7,391 0.0307
2026-02-13 2025-12-31 13F ECOLAB COM 278865100 0 -10,782 -100.00 0 -100.00
2025-11-14 2025-09-30 13F ECOLAB COM 278865100 10,782 10,782 2,953 0.0111
2025-08-13 2025-06-30 13F ECOLAB COM 278865100 0 -29 -100.00 0 -100.00
2025-05-14 2025-03-31 13F ECOLAB COM 278865100 29 -1,018 -97.23 7 -97.14 0.0000
2025-02-13 2024-12-31 13F ECOLAB COM 278865100 1,047 -56,133 -98.17 245 -98.32 0.0006
2024-11-14 2024-09-30 13F ECOLAB COM 278865100 57,180 -37,704 -39.74 14,600 -35.35 0.0304
2024-08-14 2024-06-30 13F ECOLAB COM 278865100 94,884 -54,162 -36.34 22,582 -34.38 0.0403
2024-05-15 2024-03-31 13F ECOLAB COM 278865100 149,046 72,863 95.64 34,415 127.76 0.0613
2024-02-14 2023-12-31 13F ECOLAB COM 278865100 76,183 76,183 15,111 0.0320
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 ECOLAB COM Call 900 -30.77 239 -29.91 n/a n/a n/a
2026-05-08 2026-03-31 13F ECOLAB COM Call 900 239 n/a n/a n/a
2026-02-13 2025-12-31 13F ECOLAB COM Call 1,300 116.67 341 107.93 n/a n/a n/a
2025-11-14 2025-09-30 13F ECOLAB COM Call 600 -76.92 164 -76.57 n/a n/a n/a
2025-08-13 2025-06-30 13F ECOLAB COM Call 2,600 188.89 701 207.02 n/a n/a n/a
2025-05-14 2025-03-31 13F ECOLAB COM Call 900 -75.68 228 -73.67 n/a n/a n/a
2025-02-13 2024-12-31 13F ECOLAB COM Call 3,700 48.00 867 35.74 n/a n/a n/a
2024-11-14 2024-09-30 13F ECOLAB COM Call 2,500 -58.33 638 -55.32 n/a n/a n/a
2024-08-14 2024-06-30 13F ECOLAB COM Call 6,000 -76.10 1,428 -75.36 n/a n/a n/a
2024-05-15 2024-03-31 13F ECOLAB COM Call 25,100 -36.78 5,796 -26.40 n/a n/a n/a
2024-02-14 2023-12-31 13F ECOLAB COM Call 39,700 26.84 7,874 48.51 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ECOLAB COM Call 31,300 1,741.18 5,302 1,572.56 n/a n/a n/a
2023-11-14 2023-09-30 13F ECOLAB COM Call 31,300 5,302 n/a n/a n/a
2023-08-14 2023-06-30 13F ECOLAB COM Call 1,700 142.86 317 175.65 n/a n/a n/a
2023-05-15 2023-03-31 13F ECOLAB COM Call 700 116 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 ECOLAB COM Put 1,700 1,600.00 452 1,638.46 n/a n/a n/a
2026-05-08 2026-03-31 13F ECOLAB COM Put 1,700 452 n/a n/a n/a
2026-02-13 2025-12-31 13F ECOLAB COM Put 100 -93.33 26 -93.66 n/a n/a n/a
2025-11-14 2025-09-30 13F ECOLAB COM Put 1,500 -76.19 411 -75.84 n/a n/a n/a
2025-08-13 2025-06-30 13F ECOLAB COM Put 6,300 6.78 1,697 13.51 n/a n/a n/a
2025-05-14 2025-03-31 13F ECOLAB COM Put 5,900 -42.16 1,496 -37.45 n/a n/a n/a
2025-02-13 2024-12-31 13F ECOLAB COM Put 10,200 -80.19 2,390 -81.82 n/a n/a n/a
2024-11-14 2024-09-30 13F ECOLAB COM Put 51,500 -4.63 13,149 2.31 n/a n/a n/a
2024-08-14 2024-06-30 13F ECOLAB COM Put 54,000 -23.62 12,852 -21.27 n/a n/a n/a
2024-05-15 2024-03-31 13F ECOLAB COM Put 70,700 4.12 16,325 21.21 n/a n/a n/a
2024-02-14 2023-12-31 13F ECOLAB COM Put 67,900 19.54 13,468 39.98 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ECOLAB COM Put 56,800 5,063.64 9,622 4,593.17 n/a n/a n/a
2023-11-14 2023-09-30 13F ECOLAB COM Put 56,800 9,622 n/a n/a n/a
2023-08-14 2023-06-30 13F ECOLAB COM Put 1,100 83.33 205 107.07 n/a n/a n/a
2023-05-15 2023-03-31 13F ECOLAB COM Put 600 99 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.