Shake Shack Inc.
US ˙ NYSE ˙ US8190471016

SecuritySHAK / Shake Shack Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership186,482 shares
Latest Disclosed Value $ 16,498,062
Citigroup Inc ownership in SHAK / Shake Shack Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 186,482 shares of Shake Shack Inc. (US:SHAK) valued at $16,498,063 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 315,744 shares of Shake Shack Inc.. This represents a change in shares of -40.94% during the quarter. The current value of the position is $10,355,345 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (SHAK) 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.

SHAK / Shake Shack 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)
2026-05-11 2026-03-31 13F SHAKE SHACK CL A 819047101 186,482 -129,262 -40.94 16,498 -35.63 0.0035
2026-02-13 2025-12-31 13F SHAKE SHACK CL A 819047101 315,744 77,027 32.27 25,629 14.69 0.0113
2025-11-10 2025-09-30 13F SHAKE SHACK CL A 819047101 238,717 -41,153 -14.70 22,346 -43.21 0.0100
2025-08-11 2025-06-30 13F SHAKE SHACK CL A 819047101 279,870 223,408 395.68 39,350 690.46 0.0193
2025-05-12 2025-03-31 13F SHAKE SHACK CL A 819047101 56,462 -11,989 -17.51 4,978 -43.97 0.0025
2025-02-12 2024-12-31 13F SHAKE SHACK CL A 819047101 68,451 17,286 33.78 8,885 68.26 0.0053
2024-11-12 2024-09-30 13F SHAKE SHACK CL A 819047101 51,165 24,118 89.17 5,281 116.93 0.0031
2024-08-12 2024-06-30 13F SHAKE SHACK CL A 819047101 27,047 3,434 14.54 2,434 -0.90 0.0016
2024-05-10 2024-03-31 13F SHAKE SHACK CL A 819047101 23,613 -112 -0.47 2,456 39.70 0.0016
2024-02-09 2023-12-31 13F SHAKE SHACK CL A 819047101 23,725 -5,758 -19.53 1,758 2.69 0.0012
2023-12-06 2023-09-30 13F/A-1 SHAKE SHACK CL A 819047101 29,483 1,959 7.12 1,712 -19.96 0.0013
2023-11-09 2023-09-30 13F SHAKE SHACK CL A 819047101 29,483 1,959 1,712 0.0005
2023-08-10 2023-06-30 13F SHAKE SHACK CL A 819047101 27,524 9,086 49.28 2,139 109.09 0.0014
2023-05-11 2023-03-31 13F SHAKE SHACK CL A 819047101 18,438 -8,318 -31.09 1,023 -7.92 0.0007
2023-02-09 2022-12-31 13F SHAKE SHACK CL A 819047101 26,756 -11,547 -30.15 1,111 -35.56 0.0009
2022-11-10 2022-09-30 13F SHAKE SHACK CL A 819047101 38,303 1,746 4.78 1,724 19.56 0.0012
2022-08-10 2022-06-30 13F SHAKE SHACK CL A 819047101 36,557 -6,862 -15.80 1,442 -51.09 0.0011
2022-05-12 2022-03-31 13F SHAKE SHACK CL A 819047101 43,419 -22,462 -34.09 2,948 -37.99 0.0018
2022-02-10 2021-12-31 13F SHAKE SHACK CL A 819047101 65,881 -18,527 -21.95 4,754 -28.22 0.0025
2021-11-10 2021-09-30 13F SHAKE SHACK CL A 819047101 84,408 48,439 134.67 6,623 72.07 0.0039
2021-08-10 2021-06-30 13F SHAKE SHACK CL A 819047101 35,969 18,190 102.31 3,849 91.97 0.0023
2021-05-13 2021-03-31 13F SHAKE SHACK CL A 819047101 17,779 -7,823 -30.56 2,005 -7.60 0.0013
2021-02-11 2020-12-31 13F SHAKE SHACK CL A 819047101 25,602 21,229 485.46 2,170 669.50 0.0013
2020-11-12 2020-09-30 13F SHAKE SHACK CL A 819047101 4,373 -22,055 -83.45 282 -79.86 0.0002
2020-08-12 2020-06-30 13F SHAKE SHACK CL A 819047101 26,428 -44,556 -62.77 1,400 -47.74 0.0011
2020-05-12 2020-03-31 13F SHAKE SHACK CL A 819047101 70,984 -43,726 -38.12 2,679 -60.79 0.0024
2020-02-12 2019-12-31 13F SHAKE SHACK CL A 819047101 114,710 54,539 90.64 6,832 15.82 0.0049
2019-11-08 2019-09-30 13F SHAKE SHACK CL A 819047101 60,171 18,150 43.19 5,899 94.43 0.0047
2019-08-12 2019-06-30 13F SHAKE SHACK CL A 819047101 42,021 -23,213 -35.58 3,034 -21.38 0.0025
2019-05-13 2019-03-31 13F SHAKE SHACK CL A 819047101 65,234 49,926 326.14 3,859 455.25 0.0037
2019-02-12 2018-12-31 13F SHAKE SHACK CL A 819047101 15,308 -18,804 -55.12 695 -67.66 0.0007
2018-11-13 2018-09-30 13F SHAKE SHACK CL A 819047101 34,112 24,768 265.07 2,149 247.73 0.0019
2018-08-10 2018-06-30 13F SHAKE SHACK CL A 819047101 9,344 8,545 1,069.46 618 1,772.73 0.0006
2018-05-11 2018-03-31 13F SHAKE SHACK CL A 819047101 799 -76 -8.69 33 -13.16 0.0000
2018-02-12 2017-12-31 13F SHAKE SHACK CL A 819047101 875 -25,431 -96.67 38 -95.65 0.0000
2017-11-13 2017-09-30 13F SHAKE SHACK CL A 819047101 26,306 -42,076 -61.53 874 -63.35 0.0007
2017-08-11 2017-06-30 13F SHAKE SHACK CL A 819047101 68,382 64,696 1,755.18 2,385 1,839.02 0.0022
2017-05-12 2017-03-31 13F SHAKE SHACK CL A 819047101 3,686 -17,954 -82.97 123 -84.11 0.0001
2017-02-10 2016-12-31 13F SHAKE SHACK CL A 819047101 21,640 18,317 551.22 774 573.04 0.0007
2016-11-10 2016-09-30 13F SHAKE SHACK CL A 819047101 3,323 -3,150 -48.66 115 -51.27 0.0001
2016-08-12 2016-06-30 13F SHAKE SHACK CL A 819047101 6,473 -4,689 -42.01 236 -43.27 0.0002
2016-05-13 2016-03-31 13F SHAKE SHACK CL A 819047101 11,162 4,086 57.74 416 48.04 0.0005
2016-02-12 2015-12-31 13F SHAKE SHACK CL A 819047101 7,076 1,499 26.88 281 6.04 0.0003
2015-11-13 2015-09-30 13F SHAKE SHACK CL A 819047101 5,577 3,818 217.06 265 150.00 0.0002
2015-08-13 2015-06-30 13F SHAKE SHACK CL A 819047101 1,759 473 36.78 106 63.08 0.0001
2015-05-14 2015-03-31 13F SHAKE SHACK CL A 819047101 1,286 1,286 65 0.0001
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
(%)
2021-05-13 2021-03-31 13F SHAKE SHACK CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F SHAKE SHACK CL A Call 79,600 -13.95 6,748 13.15 n/a n/a n/a
2020-11-12 2020-09-30 13F SHAKE SHACK CL A Call 92,500 1.31 5,964 23.30 n/a n/a n/a
2020-08-12 2020-06-30 13F SHAKE SHACK CL A Call 91,300 8.95 4,837 52.92 n/a n/a n/a
2020-05-12 2020-03-31 13F SHAKE SHACK CL A Call 83,800 15.59 3,163 -26.77 n/a n/a n/a
2020-02-12 2019-12-31 13F SHAKE SHACK CL A Call 72,500 39.16 4,319 -15.45 n/a n/a n/a
2019-11-08 2019-09-30 13F SHAKE SHACK CL A Call 52,100 55.52 5,108 111.16 n/a n/a n/a
2019-08-12 2019-06-30 13F SHAKE SHACK CL A Call 33,500 -44.99 2,419 -32.84 n/a n/a n/a
2019-05-13 2019-03-31 13F SHAKE SHACK CL A Call 60,900 25.31 3,602 63.21 n/a n/a n/a
2019-02-12 2018-12-31 13F SHAKE SHACK CL A Call 48,600 -2.41 2,207 -29.67 n/a n/a n/a
2018-11-13 2018-09-30 13F SHAKE SHACK CL A Call 49,800 125.34 3,138 114.49 n/a n/a n/a
2018-08-10 2018-06-30 13F SHAKE SHACK CL A Call 22,100 -10.89 1,463 41.76 n/a n/a n/a
2018-05-11 2018-03-31 13F SHAKE SHACK CL A Call 24,800 -33.15 1,032 -35.62 n/a n/a n/a
2018-02-12 2017-12-31 13F SHAKE SHACK CL A Call 37,100 58.55 1,603 106.04 n/a n/a n/a
2017-11-13 2017-09-30 13F SHAKE SHACK CL A Call 23,400 249.25 778 232.48 n/a n/a n/a
2017-08-11 2017-06-30 13F SHAKE SHACK CL A Call 6,700 -5.63 234 -1.27 n/a n/a n/a
2017-05-12 2017-03-31 13F SHAKE SHACK CL A Call 7,100 108.82 237 94.26 n/a n/a n/a
2017-02-10 2016-12-31 13F SHAKE SHACK CL A Call 3,400 -56.41 122 -54.81 n/a n/a n/a
2016-11-10 2016-09-30 13F SHAKE SHACK CL A Call 7,800 457.14 270 429.41 n/a n/a n/a
2016-08-12 2016-06-30 13F SHAKE SHACK CL A Call 1,400 -39.13 51 -40.70 n/a n/a n/a
2016-05-13 2016-03-31 13F SHAKE SHACK CL A Call 2,300 2,200.00 86 2,050.00 n/a n/a n/a
2016-02-12 2015-12-31 13F SHAKE SHACK CL A Call 100 -98.39 4 -98.64 n/a n/a n/a
2015-11-13 2015-09-30 13F SHAKE SHACK CL A Call 6,200 294 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
(%)
2025-11-10 2025-09-30 13F SHAKE SHACK CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-11 2025-06-30 13F SHAKE SHACK CL A Put 50,000 7,030 n/a n/a n/a
2021-05-13 2021-03-31 13F SHAKE SHACK CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F SHAKE SHACK CL A Put 110,700 -4.32 9,385 25.80 n/a n/a n/a
2020-11-12 2020-09-30 13F SHAKE SHACK CL A Put 115,700 -5.63 7,460 14.86 n/a n/a n/a
2020-08-12 2020-06-30 13F SHAKE SHACK CL A Put 122,600 -14.33 6,495 20.26 n/a n/a n/a
2020-05-12 2020-03-31 13F SHAKE SHACK CL A Put 143,100 46.47 5,401 -7.20 n/a n/a n/a
2020-02-12 2019-12-31 13F SHAKE SHACK CL A Put 97,700 26.55 5,820 -23.11 n/a n/a n/a
2019-11-08 2019-09-30 13F SHAKE SHACK CL A Put 77,200 42.96 7,569 94.13 n/a n/a n/a
2019-08-12 2019-06-30 13F SHAKE SHACK CL A Put 54,000 50.42 3,899 83.66 n/a n/a n/a
2019-05-13 2019-03-31 13F SHAKE SHACK CL A Put 35,900 2.28 2,123 33.19 n/a n/a n/a
2019-02-12 2018-12-31 13F SHAKE SHACK CL A Put 35,100 -31.84 1,594 -50.88 n/a n/a n/a
2018-11-13 2018-09-30 13F SHAKE SHACK CL A Put 51,500 59.94 3,245 52.28 n/a n/a n/a
2018-08-10 2018-06-30 13F SHAKE SHACK CL A Put 32,200 107.74 2,131 230.39 n/a n/a n/a
2018-05-11 2018-03-31 13F SHAKE SHACK CL A Put 15,500 -49.18 645 -51.06 n/a n/a n/a
2018-02-12 2017-12-31 13F SHAKE SHACK CL A Put 30,500 -53.72 1,318 -39.82 n/a n/a n/a
2017-11-13 2017-09-30 13F SHAKE SHACK CL A Put 65,900 -57.07 2,190 -59.10 n/a n/a n/a
2017-08-11 2017-06-30 13F SHAKE SHACK CL A Put 153,500 3,835.90 5,354 4,018.46 n/a n/a n/a
2017-05-12 2017-03-31 13F SHAKE SHACK CL A Put 3,900 -45.83 130 -49.61 n/a n/a n/a
2017-02-10 2016-12-31 13F SHAKE SHACK CL A Put 7,200 9.09 258 12.66 n/a n/a n/a
2016-11-10 2016-09-30 13F SHAKE SHACK CL A Put 6,600 -57.14 229 -59.18 n/a n/a n/a
2016-08-12 2016-06-30 13F SHAKE SHACK CL A Put 15,400 85.54 561 80.97 n/a n/a n/a
2016-05-13 2016-03-31 13F SHAKE SHACK CL A Put 8,300 38.33 310 30.25 n/a n/a n/a
2016-02-12 2015-12-31 13F SHAKE SHACK CL A Put 6,000 238 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.