Amer Sports, Inc.
US ˙ NYSE

SecurityAS / Amer Sports, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership1,276,184 shares
Latest Disclosed Value $ 42,011,977
Citadel Advisors Llc ownership in AS / Amer Sports, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 1,276,184 shares of Amer Sports, Inc. (US:AS) valued at $42,011,977 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 44,755 shares of Amer Sports, Inc.. This represents a change in shares of 2,751.49% during the quarter. The current value of the position is $43,849,682 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (AS) in the form of stock options. The firm currently holds call options representing 161,300 of underlying shares valued at $5,309,996 USD and put options representing 49,300 of underlying shares valued at $1,622,956 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.

AS / Amer Sports, 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)
2026-05-15 2026-03-31 13F AMER SPORTS COM SHS G0260P102 1,276,184 1,231,429 2,751.49 42,012 2,414.12 0.0060
2026-02-17 2025-12-31 13F AMER SPORTS COM SHS G0260P102 44,755 -783,175 -94.59 1,672 -94.19 0.0003
2025-11-14 2025-09-30 13F AMER SPORTS COM SHS G0260P102 827,930 182,760 28.33 28,771 15.05 0.0044
2025-08-14 2025-06-30 13F AMER SPORTS COM SHS G0260P102 645,170 613,920 1,964.54 25,007 2,894.73 0.0043
2025-05-15 2025-03-31 13F AMER SPORTS COM SHS G0260P102 31,250 31,250 835 0.0002
2025-02-14 2024-12-31 13F AMER SPORTS COM SHS G0260P102 0 -19,411 -100.00 0 -100.00
2024-11-14 2024-09-30 13F AMER SPORTS COM SHS G0260P102 19,411 19,411 310 0.0001
2024-08-14 2024-06-30 13F AMER SPORTS COM SHS G0260P102 0 -1,559,694 -100.00 0 -100.00
2024-05-15 2024-03-31 13F AMER SPORTS COM SHS G0260P102 1,559,694 1,559,694 25,423 0.0049
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
(%)
2026-05-15 2026-03-31 13F AMER SPORTS COM SHS Call 161,300 126.86 5,310 99.96 n/a n/a n/a
2026-02-17 2025-12-31 13F AMER SPORTS COM SHS Call 71,100 -37.74 2,656 -33.09 n/a n/a n/a
2025-11-14 2025-09-30 13F AMER SPORTS COM SHS Call 114,200 250.31 3,968 214.17 n/a n/a n/a
2025-08-14 2025-06-30 13F AMER SPORTS COM SHS Call 32,600 191.07 1,264 322.41 n/a n/a n/a
2025-05-15 2025-03-31 13F AMER SPORTS COM SHS Call 11,200 -71.50 299 -72.77 n/a n/a n/a
2025-02-14 2024-12-31 13F AMER SPORTS COM SHS Call 39,300 410.39 1,099 800.00 n/a n/a n/a
2024-11-14 2024-09-30 13F AMER SPORTS COM SHS Call 7,700 1,440.00 123 1,933.33 n/a n/a n/a
2024-08-14 2024-06-30 13F AMER SPORTS COM SHS Call 500 -95.50 6 -96.67 n/a n/a n/a
2024-05-15 2024-03-31 13F AMER SPORTS COM SHS Call 11,100 181 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
(%)
2026-05-15 2026-03-31 13F AMER SPORTS COM SHS Put 49,300 -73.26 1,623 -76.45 n/a n/a n/a
2026-02-17 2025-12-31 13F AMER SPORTS COM SHS Put 184,400 -58.74 6,887 -55.65 n/a n/a n/a
2025-11-14 2025-09-30 13F AMER SPORTS COM SHS Put 446,900 336.43 15,530 291.26 n/a n/a n/a
2025-08-14 2025-06-30 13F AMER SPORTS COM SHS Put 102,400 70.10 3,969 146.67 n/a n/a n/a
2025-05-15 2025-03-31 13F AMER SPORTS COM SHS Put 60,200 86.38 1,609 78.18 n/a n/a n/a
2025-02-14 2024-12-31 13F AMER SPORTS COM SHS Put 32,300 330.67 903 658.82 n/a n/a n/a
2024-11-14 2024-09-30 13F AMER SPORTS COM SHS Put 7,500 -85.52 120 -81.72 n/a n/a n/a
2024-08-14 2024-06-30 13F AMER SPORTS COM SHS Put 51,800 572.73 651 420.80 n/a n/a n/a
2024-05-15 2024-03-31 13F AMER SPORTS COM SHS Put 7,700 126 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.