Sun Communities, Inc.
US ˙ NYSE ˙ US8666741041

SecuritySUI / Sun Communities, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership198,193 shares
Latest Disclosed Value $ 24,964,390
Citigroup Inc ownership in SUI / Sun Communities, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 198,193 shares of Sun Communities, Inc. (US:SUI) valued at $24,964,390 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 233,129 shares of Sun Communities, Inc.. This represents a change in shares of -14.99% during the quarter. The current value of the position is $23,888,202 USD.

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

SUI / Sun Communities, 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 SUN CMNTYS COM 866674104 198,193 -34,936 -14.99 24,964 -13.58 0.0054
2026-02-13 2025-12-31 13F SUN CMNTYS COM 866674104 233,129 98,157 72.72 28,887 65.91 0.0127
2025-11-10 2025-09-30 13F SUN CMNTYS COM 866674104 134,972 -12,894 -8.72 17,411 -6.91 0.0078
2025-08-11 2025-06-30 13F SUN CMNTYS COM 866674104 147,866 73,194 98.02 18,704 94.72 0.0092
2025-05-12 2025-03-31 13F SUN CMNTYS COM 866674104 74,672 12,788 20.66 9,606 26.23 0.0049
2025-02-12 2024-12-31 13F SUN CMNTYS COM 866674104 61,884 6,179 11.09 7,610 1.08 0.0045
2024-11-12 2024-09-30 13F SUN CMNTYS COM 866674104 55,705 -58,379 -51.17 7,529 -45.16 0.0044
2024-08-12 2024-06-30 13F SUN CMNTYS COM 866674104 114,084 -7,795 -6.40 13,729 -12.40 0.0088
2024-05-10 2024-03-31 13F SUN CMNTYS COM 866674104 121,879 30,349 33.16 15,671 28.11 0.0103
2024-02-09 2023-12-31 13F SUN CMNTYS COM 866674104 91,530 13,173 16.81 12,233 31.92 0.0086
2023-12-06 2023-09-30 13F/A-1 SUN CMNTYS COM 866674104 78,357 25,905 49.39 9,273 35.52 0.0069
2023-11-09 2023-09-30 13F SUN CMNTYS COM 866674104 78,357 25,905 9,273 0.0028
2023-08-10 2023-06-30 13F SUN CMNTYS COM 866674104 52,452 -51,543 -49.56 6,843 -53.30 0.0045
2023-05-11 2023-03-31 13F SUN CMNTYS COM 866674104 103,995 37,418 56.20 14,651 53.89 0.0103
2023-02-09 2022-12-31 13F SUN CMNTYS COM 866674104 66,577 -36,014 -35.10 9,521 -31.43 0.0076
2022-11-10 2022-09-30 13F SUN CMNTYS COM 866674104 102,591 10,877 11.86 13,883 -5.01 0.0099
2022-08-10 2022-06-30 13F SUN CMNTYS COM 866674104 91,714 -56,978 -38.32 14,615 -43.93 0.0109
2022-05-12 2022-03-31 13F SUN CMNTYS COM 866674104 148,692 -49,965 -25.15 26,065 -37.51 0.0158
2022-02-10 2021-12-31 13F SUN CMNTYS COM 866674104 198,657 -13,057 -6.17 41,712 6.44 0.0223
2021-11-10 2021-09-30 13F SUN CMNTYS COM 866674104 211,714 -22,526 -9.62 39,189 -2.39 0.0231
2021-08-10 2021-06-30 13F SUN CMNTYS COM 866674104 234,240 26,912 12.98 40,149 29.06 0.0242
2021-05-13 2021-03-31 13F SUN CMNTYS COM 866674104 207,328 20,774 11.14 31,108 9.74 0.0201
2021-02-11 2020-12-31 13F SUN CMNTYS COM 866674104 186,554 6,962 3.88 28,347 12.25 0.0167
2020-11-12 2020-09-30 13F SUN CMNTYS COM 866674104 179,592 109,586 156.54 25,253 165.85 0.0165
2020-08-12 2020-06-30 13F SUN CMNTYS COM 866674104 70,006 27,696 65.46 9,499 79.84 0.0074
2020-05-12 2020-03-31 13F SUN CMNTYS COM 866674104 42,310 -37,074 -46.70 5,282 -55.67 0.0048
2020-02-12 2019-12-31 13F SUN CMNTYS COM 866674104 79,384 -47,930 -37.65 11,916 -36.95 0.0086
2019-11-08 2019-09-30 13F SUN CMNTYS COM 866674104 127,314 -33,988 -21.07 18,900 -8.59 0.0150
2019-08-12 2019-06-30 13F SUN CMNTYS COM 866674104 161,302 63,379 64.72 20,677 78.16 0.0167
2019-05-13 2019-03-31 13F SUN CMNTYS COM 866674104 97,923 33,187 51.27 11,606 76.25 0.0112
2019-02-12 2018-12-31 13F SUN CMNTYS COM 866674104 64,736 -14,798 -18.61 6,585 -18.47 0.0067
2018-11-13 2018-09-30 13F SUN CMNTYS COM 866674104 79,534 -14,286 -15.23 8,077 -12.05 0.0072
2018-08-10 2018-06-30 13F SUN CMNTYS COM 866674104 93,820 -82,039 -46.65 9,184 -42.84 0.0084
2018-05-11 2018-03-31 13F SUN CMNTYS COM 866674104 175,859 11,692 7.12 16,068 5.50 0.0132
2018-02-12 2017-12-31 13F SUN CMNTYS COM 866674104 164,167 43,577 36.14 15,231 47.42 0.0122
2017-11-13 2017-09-30 13F SUN CMNTYS COM 866674104 120,590 -60,629 -33.46 10,332 -34.98 0.0085
2017-08-11 2017-06-30 13F SUN CMNTYS COM 866674104 181,219 -7,944 -4.20 15,891 4.58 0.0143
2017-05-12 2017-03-31 13F SUN CMNTYS COM 866674104 189,163 -142,899 -43.03 15,195 -40.27 0.0135
2017-02-10 2016-12-31 13F SUN CMNTYS COM 866674104 332,062 -89,311 -21.20 25,440 -23.07 0.0229
2016-11-10 2016-09-30 13F SUN CMNTYS COM 866674104 421,373 406,127 2,663.83 33,070 2,728.91 0.0309
2016-08-12 2016-06-30 13F SUN CMNTYS COM 866674104 15,246 -35,180 -69.77 1,169 -67.63 0.0012
2016-05-13 2016-03-31 13F SUN CMNTYS COM 866674104 50,426 -5,344 -9.58 3,611 -5.52 0.0041
2016-02-12 2015-12-31 13F SUN CMNTYS COM 866674104 55,770 -72,627 -56.56 3,822 -56.07 0.0038
2015-11-13 2015-09-30 13F SUN CMNTYS COM 866674104 128,397 25,162 24.37 8,701 36.34 0.0081
2015-08-13 2015-06-30 13F SUN CMNTYS COM 866674104 103,235 12,683 14.01 6,382 5.61 0.0057
2015-05-14 2015-03-31 13F SUN CMNTYS COM 866674104 90,552 45,339 100.28 6,043 121.11 0.0058
2015-02-17 2014-12-31 13F SUN CMNTYS COM 866674104 45,213 -8,260 -15.45 2,733 1.22 0.0024
2014-11-14 2014-09-30 13F SUN CMNTYS COM 866674104 53,473 -100,608 -65.30 2,700 -64.84 0.0024
2014-08-14 2014-06-30 13F SUN CMNTYS COM 866674104 154,081 -23,294 -13.13 7,679 -3.98 0.0074
2014-05-15 2014-03-31 13F SUN CMNTYS COM 866674104 177,375 164,912 1,323.21 7,997 1,406.03 0.0082
2014-02-14 2013-12-31 13F SUN CMNTYS COM 866674104 12,463 10,848 671.70 531 669.57 0.0005
2013-11-14 2013-09-30 13F SUN CMNTYS COM 866674104 1,615 -9,144 -84.99 69 -87.13 0.0001
2013-08-14 2013-06-30 13F SUN CMNTYS COM 866674104 10,759 10,759 536 0.0005
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
(%)
2024-11-12 2024-09-30 13F SUN CMNTYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-12 2024-06-30 13F SUN CMNTYS COM Call 65,600 7,894 n/a n/a n/a
2019-08-12 2019-06-30 13F SUN CMNTYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-13 2019-03-31 13F SUN CMNTYS COM Call 33,700 3,994 n/a n/a n/a
2017-08-11 2017-06-30 13F SUN CMNTYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-05-12 2017-03-31 13F SUN CMNTYS COM Call 46,000 3,695 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
(%)
2021-08-10 2021-06-30 13F SUN CMNTYS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-13 2021-03-31 13F SUN CMNTYS COM Put 28,500 4,276 n/a n/a n/a
2021-02-11 2020-12-31 13F SUN CMNTYS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-11-12 2020-09-30 13F SUN CMNTYS COM Put 51,300 7,213 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.