Sun Communities, Inc.
US ˙ NYSE ˙ US8666741041

SecuritySUI / Sun Communities, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership580,005 shares
Latest Disclosed Value $ 71,868,417
Sei Investments Co ownership in SUI / Sun Communities, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 580,005 shares of Sun Communities, Inc. (US:SUI) valued at $71,868,420 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 533,532 shares of Sun Communities, Inc.. This represents a change in shares of 8.71% during the quarter. The current value of the position is $69,908,003 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (SUI) in the form of stock options.

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)
2026-02-13 2025-12-31 13F SUN CMNTYS COM 866674104 580,005 46,473 8.71 71,868 4.42 0.0709
2025-11-13 2025-09-30 13F SUN CMNTYS COM 866674104 533,532 -248,529 -31.78 68,826 -30.43 0.0740
2025-08-14 2025-06-30 13F SUN CMNTYS COM 866674104 782,061 -453 -0.06 98,923 -1.73 0.1147
2025-05-14 2025-03-31 13F/A-1 SUN CMNTYS COM 866674104 782,514 -36,855 -4.50 100,662 -0.09 0.1296
2025-05-13 2025-03-31 13F SUN CMNTYS COM 866674104 817,304 -2,065 100,528 0.1093
2025-02-11 2024-12-31 13F SUN CMNTYS COM 866674104 819,369 172,924 26.75 100,758 15.33 0.1294
2024-11-12 2024-09-30 13F SUN CMNTYS COM 866674104 646,445 32,040 5.21 87,367 18.16 0.1135
2024-08-13 2024-06-30 13F SUN CMNTYS COM 866674104 614,405 -59,697 -8.86 73,938 -14.70 0.1048
2024-05-07 2024-03-31 13F SUN CMNTYS COM 866674104 674,102 -33,461 -4.73 86,676 -8.34 0.1270
2024-02-14 2023-12-31 13F SUN CMNTYS COM 866674104 707,563 13,215 1.90 94,566 15.09 0.1518
2023-11-14 2023-09-30 13F SUN CMNTYS COM 866674104 694,348 146,571 26.76 82,169 14.98 0.1476
2023-08-11 2023-06-30 13F SUN CMNTYS COM 866674104 547,777 90,222 19.72 71,463 10.86 0.1247
2023-05-12 2023-03-31 13F SUN CMNTYS COM 866674104 457,555 16,664 3.78 64,460 2.24 0.1197
2023-02-10 2022-12-31 13F SUN CMNTYS COM 866674104 440,891 71,577 19.38 63,047 26.15 0.1401
2022-11-14 2022-09-30 13F SUN CMNTYS COM 866674104 369,314 -75,954 -17.06 49,979 -29.57 0.1115
2022-08-15 2022-06-30 13F SUN CMNTYS COM 866674104 445,268 26,163 6.24 70,959 -3.41 0.1532
2022-05-13 2022-03-31 13F SUN CMNTYS COM 866674104 419,105 59,756 16.63 73,466 -2.64 0.1477
2022-02-14 2021-12-31 13F SUN CMNTYS COM 866674104 359,349 41,042 12.89 75,456 28.06 0.1416
2021-11-12 2021-09-30 13F SUN CMNTYS COM 866674104 318,307 -77,161 -19.51 58,922 -13.08 0.1236
2021-08-06 2021-06-30 13F SUN CMNTYS COM 866674104 395,468 6,657 1.71 67,788 16.20 0.1503
2021-05-12 2021-03-31 13F SUN CMNTYS COM 866674104 388,811 53,024 15.79 58,336 14.34 0.1470
2021-02-08 2020-12-31 13F SUN CMNTYS COM 866674104 335,787 106,984 46.76 51,019 58.53 0.1319
2020-12-04 2020-09-30 13F/A-1 SUN CMNTYS COM 866674104 228,803 36,051 18.70 32,183 23.07 0.0932
2020-11-06 2020-09-30 13F SUN CMNTYS COM 866674104 228,826 36,074 32,186 77,496.7318
2020-08-17 2020-06-30 13F/A-1 SUN CMNTYS COM 866674104 192,752 -15,843 -7.60 26,150 0.40 0.0812
2020-08-11 2020-06-30 13F SUN CMNTYS COM 866674104 206,876 -1,719 31,031 84,173.2393
2020-05-14 2020-03-31 13F SUN CMNTYS COM 866674104 208,595 1,558 0.75 26,047 -16.20 0.0957
2020-02-06 2019-12-31 13F SUN CMNTYS COM 866674104 207,037 -37,532 -15.35 31,081 -14.38 0.0927
2019-11-12 2019-09-30 13F SUN CMNTYS COM 866674104 244,569 8,169 3.46 36,300 19.76 0.0929
2019-08-14 2019-06-30 13F SUN CMNTYS COM 866674104 236,400 -27,247 -10.33 30,310 -3.01 0.0990
2019-05-15 2019-03-31 13F SUN CMNTYS COM 866674104 263,647 -2,866 -1.08 31,250 15.48 0.1049
2019-02-13 2018-12-31 13F SUN CMNTYS COM 866674104 266,513 828 0.31 27,062 0.31 0.0963
2018-11-08 2018-09-30 13F SUN CMNTYS COM 866674104 265,685 10,339 4.05 26,979 7.95 0.0978
2018-08-03 2018-06-30 13F SUN CMNTYS COM 866674104 255,346 -15 -0.01 24,993 7.11 0.0849
2018-05-11 2018-03-31 13F SUN CMNTYS COM 866674104 255,361 -14,484 -5.37 23,333 -6.80 0.0894
2018-02-08 2017-12-31 13F SUN CMNTYS COM 866674104 269,845 29,549 12.30 25,035 21.59 0.0869
2017-11-06 2017-09-30 13F SUN CMNTYS COM 866674104 240,296 27,085 12.70 20,589 10.13 0.0732
2017-07-31 2017-06-30 13F SUN CMNTYS COM 866674104 213,211 1,851 0.88 18,696 10.11 0.0745
2017-05-05 2017-03-31 13F SUN CMNTYS COM 866674104 211,360 30,811 17.07 16,979 22.75 0.0744
2017-02-02 2016-12-31 13F SUN CMNTYS COM 866674104 180,549 38,472 27.08 13,832 24.04 0.0670
2016-11-04 2016-09-30 13F SUN CMNTYS COM 866674104 142,077 62,742 79.08 11,151 83.40 0.0566
2016-08-11 2016-06-30 13F SUN CMNTYS COM 866674104 79,335 13,654 20.79 6,080 29.28 0.0365
2016-05-10 2016-03-31 13F/A-1 SUN CMNTYS COM 866674104 65,681 20,190 44.38 4,703 50.88 0.0293
2016-02-03 2015-12-31 13F SUN CMNTYS COM 866674104 45,491 23,300 105.00 3,117 107.25 0.0190
2015-11-02 2015-09-30 13F/A-1 SUN CMNTYS COM 866674104 22,191 -600 -2.63 1,504 6.74 0.0138
2015-10-30 2015-09-30 13F SUN CMNTYS COM 866674104 22,191 1,504
2015-08-07 2015-06-30 13F/A-1 SUN BANCORP PUT 866674104 0 -23,288 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 SUN CMNTYS COM 866674104 22,791 -497 -2.13 1,409 -9.33 0.0127
2015-08-04 2015-06-30 13F SUN CMNTYS COM 866674104 22,791 -497 1,409 0.0127
2015-05-14 2015-03-31 13F/A-1 SUN CMNTYS COM 866674104 23,288 2,107 9.95 1,554 21.31 0.0135
2015-05-01 2015-03-31 13F SUN BANCORP PUT 866674104 23,288 23,288 1,554 0.0135
2015-02-10 2014-12-31 13F SUN CMNTYS COM 866674104 21,181 21,181 1,281 0.0113
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
(%)
2015-08-07 2015-06-30 13F/A SUN BANCORP PUT 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-01 2015-03-31 13F SUN BANCORP PUT 23,288 1,554 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.