健康流公司
US ˙ NasdaqGS ˙ US42222N1037

SecurityHSTM / HealthStream, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership43,385 shares
Latest Disclosed Value $ 898,504
Citigroup Inc reports 284.69% increase in ownership of HSTM / HealthStream, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 43,385 shares of HealthStream, Inc. (US:HSTM) valued at $898,503 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,278 shares of HealthStream, Inc.. This represents a change in shares of 284.69% during the quarter. The current value of the position is $1,095,037 USD.

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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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 HEALTHSTREAM COM 42222N103 43,385 32,107 284.69 899 245.38 0.0004
2026-02-13 2025-12-31 13F HEALTHSTREAM COM 42222N103 11,278 -2,177 -16.18 260 -31.40 0.0001
2025-11-10 2025-09-30 13F HEALTHSTREAM COM 42222N103 13,455 -9,558 -41.53 380 -40.41 0.0002
2025-08-11 2025-06-30 13F HEALTHSTREAM COM 42222N103 23,013 -20,848 -47.53 637 -54.93 0.0003
2025-05-12 2025-03-31 13F HEALTHSTREAM COM 42222N103 43,861 2,330 5.61 1,411 6.89 0.0007
2025-02-12 2024-12-31 13F HEALTHSTREAM COM 42222N103 41,531 6,128 17.31 1,321 29.29 0.0008
2024-11-12 2024-09-30 13F HEALTHSTREAM COM 42222N103 35,403 12,978 57.87 1,021 63.36 0.0006
2024-08-12 2024-06-30 13F HEALTHSTREAM COM 42222N103 22,425 1,761 8.52 626 13.64 0.0004
2024-05-10 2024-03-31 13F HEALTHSTREAM COM 42222N103 20,664 2,024 10.86 551 9.34 0.0004
2024-02-09 2023-12-31 13F HEALTHSTREAM COM 42222N103 18,640 7,373 65.44 504 107.00 0.0004
2023-12-06 2023-09-30 13F/A-1 HEALTHSTREAM COM 42222N103 11,267 -9,232 -45.04 243 -51.69 0.0002
2023-11-09 2023-09-30 13F HEALTHSTREAM COM 42222N103 11,267 -9,232 243 0.0002
2023-08-10 2023-06-30 13F HEALTHSTREAM COM 42222N103 20,499 7,721 60.42 503 45.38 0.0003
2023-05-11 2023-03-31 13F HEALTHSTREAM COM 42222N103 12,778 -2,245 -14.94 346 -7.24 0.0002
2023-02-09 2022-12-31 13F HEALTHSTREAM COM 42222N103 15,023 3,229 27.38 373 48.61 0.0003
2022-11-10 2022-09-30 13F HEALTHSTREAM COM 42222N103 11,794 232 2.01 251 0.40 0.0002
2022-08-10 2022-06-30 13F HEALTHSTREAM COM 42222N103 11,562 -11,411 -49.67 250 -45.41 0.0002
2022-05-12 2022-03-31 13F HEALTHSTREAM COM 42222N103 22,973 1,510 7.04 458 -19.08 0.0003
2022-02-10 2021-12-31 13F HEALTHSTREAM COM 42222N103 21,463 6,424 42.72 566 31.63 0.0003
2021-11-10 2021-09-30 13F HEALTHSTREAM COM 42222N103 15,039 727 5.08 430 7.50 0.0003
2021-08-10 2021-06-30 13F HEALTHSTREAM COM 42222N103 14,312 11,043 337.81 400 447.95 0.0002
2021-05-13 2021-03-31 13F HEALTHSTREAM COM 42222N103 3,269 -13,513 -80.52 73 -80.05 0.0000
2021-02-11 2020-12-31 13F HEALTHSTREAM COM 42222N103 16,782 5,339 46.66 366 59.13 0.0002
2020-11-12 2020-09-30 13F HEALTHSTREAM COM 42222N103 11,443 -9,804 -46.14 230 -51.06 0.0002
2020-08-12 2020-06-30 13F HEALTHSTREAM COM 42222N103 21,247 3,920 22.62 470 13.25 0.0004
2020-05-12 2020-03-31 13F HEALTHSTREAM COM 42222N103 17,327 -11,674 -40.25 415 -47.40 0.0004
2020-02-12 2019-12-31 13F HEALTHSTREAM COM 42222N103 29,001 12,880 79.90 789 89.21 0.0006
2019-11-08 2019-09-30 13F HEALTHSTREAM COM 42222N103 16,121 -3,259 -16.82 417 -16.77 0.0003
2019-08-12 2019-06-30 13F HEALTHSTREAM COM 42222N103 19,380 -825 -4.08 501 -11.64 0.0004
2019-05-13 2019-03-31 13F HEALTHSTREAM COM 42222N103 20,205 2,668 15.21 567 33.73 0.0005
2019-02-12 2018-12-31 13F HEALTHSTREAM COM 42222N103 17,537 434 2.54 424 -20.00 0.0004
2018-11-13 2018-09-30 13F HEALTHSTREAM COM 42222N103 17,103 11,137 186.67 530 225.15 0.0005
2018-08-10 2018-06-30 13F HEALTHSTREAM COM 42222N103 5,966 -5,623 -48.52 163 -43.40 0.0001
2018-05-11 2018-03-31 13F HEALTHSTREAM COM 42222N103 11,589 116 1.01 288 8.27 0.0002
2018-02-12 2017-12-31 13F HEALTHSTREAM COM 42222N103 11,473 -11,325 -49.68 266 -50.00 0.0002
2017-11-13 2017-09-30 13F HEALTHSTREAM COM 42222N103 22,798 -1,738 -7.08 532 -17.65 0.0004
2017-08-11 2017-06-30 13F HEALTHSTREAM COM 42222N103 24,536 -1,104 -4.31 646 3.86 0.0006
2017-05-12 2017-03-31 13F HEALTHSTREAM COM 42222N103 25,640 -24,604 -48.97 622 -50.63 0.0006
2017-02-10 2016-12-31 13F HEALTHSTREAM COM 42222N103 50,244 33,137 193.70 1,260 166.38 0.0011
2016-11-10 2016-09-30 13F HEALTHSTREAM COM 42222N103 17,107 7,881 85.42 473 93.06 0.0004
2016-08-12 2016-06-30 13F HEALTHSTREAM COM 42222N103 9,226 -9,690 -51.23 245 -41.39 0.0003
2016-05-13 2016-03-31 13F HEALTHSTREAM COM 42222N103 18,916 17,558 1,292.93 418 1,293.33 0.0005
2016-02-12 2015-12-31 13F HEALTHSTREAM COM 42222N103 1,358 67 5.19 30 7.14 0.0000
2015-11-13 2015-09-30 13F HEALTHSTREAM COM 42222N103 1,291 -2,563 -66.50 28 -76.07 0.0000
2015-08-13 2015-06-30 13F HEALTHSTREAM COM 42222N103 3,854 1,765 84.49 117 120.75 0.0001
2015-05-14 2015-03-31 13F HEALTHSTREAM COM 42222N103 2,089 1,860 812.23 53 657.14 0.0001
2015-02-17 2014-12-31 13F HEALTHSTREAM COM 42222N103 229 -2,831 -92.52 7 -90.41 0.0000
2014-11-14 2014-09-30 13F HEALTHSTREAM COM 42222N103 3,060 -358 -10.47 73 -12.05 0.0001
2014-08-14 2014-06-30 13F HEALTHSTREAM COM 42222N103 3,418 93 2.80 83 -6.74 0.0001
2014-05-15 2014-03-31 13F HEALTHSTREAM COM 42222N103 3,325 -6,560 -66.36 89 -72.53 0.0001
2014-02-14 2013-12-31 13F HEALTHSTREAM COM 42222N103 9,885 5,569 129.03 324 97.56 0.0003
2013-11-14 2013-09-30 13F HEALTHSTREAM COM 42222N103 4,316 -47 -1.08 164 47.75 0.0002
2013-08-14 2013-06-30 13F HEALTHSTREAM COM 42222N103 4,363 4,363 111 0.0001
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.