SPDR Series Trust - State Street SPDR S&P 400 TM Mid Cap Growth ETF
US ˙ ARCA ˙ US78464A8210

SecurityMDYG / SPDR Series Trust - State Street SPDR S&P 400 TM Mid Cap Growth ETF
InstitutionAsset Management Group, Inc.
Latest Disclosed Ownership19,845 shares
Latest Disclosed Value $ 1,904,298
Asset Management Group, Inc. reports 5.23% decrease in ownership of MDYG / SPDR Series Trust - State Street SPDR S&P 400 TM Mid Cap Growth ETF

On May 15, 2026 - Asset Management Group, Inc. filed a 13F-HR form disclosing ownership of 19,845 shares of SPDR Series Trust - State Street SPDR S&P 400 TM Mid Cap Growth ETF (US:MDYG) valued at $1,904,326 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 20,940 shares of SPDR Series Trust - State Street SPDR S&P 400 TM Mid Cap Growth ETF. This represents a change in shares of -5.23% during the quarter. The current value of the position is $2,181,958 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)
2026-05-15 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A821 19,845 -1,095 -5.23 1,904 -1.60 0.3068
2026-02-17 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A821 20,940 39 0.19 1,935 1.15 0.3130
2025-11-14 2025-09-30 13F SPDR SERIES TRUST S&P 400 MDCP GRW 78464A821 20,901 -232 -1.10 1,914 4.25 0.3131
2025-08-12 2025-06-30 13F SPDR SERIES TRUST S&P 400 MDCP GRW 78464A821 21,133 42 0.20 1,836 9.55 0.3200
2025-05-14 2025-03-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 21,091 -207 -0.97 1,676 -9.46 0.3097
2025-02-14 2024-12-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 21,298 47 0.22 1,851 -0.75 0.3290
2024-11-12 2024-09-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 21,251 -1,356 -6.00 1,865 -1.89 0.3265
2024-08-13 2024-06-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,607 51 0.23 1,900 -3.46 0.3540
2024-05-15 2024-03-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,556 34 0.15 1,969 15.49 0.3696
2024-02-14 2023-12-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,522 84 0.37 1,704 9.86 0.3415
2023-11-14 2023-09-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,438 66 0.30 1,551 -3.18 0.3413
2023-08-14 2023-06-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,372 70 0.31 1,603 4.98 0.3403
2023-05-15 2023-03-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,302 57 0.26 1,526 5.02 0.3404
2023-02-14 2022-12-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,245 77 0.35 1,453 8.59 0.3415
2022-11-14 2022-09-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,168 72 0.33 1,338 -0.67 0.3342
2022-08-15 2022-06-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,096 63 0.29 1,347 -17.61 0.3232
2022-05-16 2022-03-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 22,033 38 0.17 1,635 -8.81 0.3421
2022-02-14 2021-12-31 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 21,995 0 0.00 1,793 7.75 0.3524
2021-11-15 2021-09-30 13F SPDR SER TR S&P 400 MDCP GRW 78464A821 21,995 34 0.15 1,664 -2.23 0.3415
2021-08-16 2021-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 21,961 31 0.14 1,702 3.34 0.3520
2021-05-17 2021-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 21,930 25 0.11 1,647 8.43 0.3566
2021-02-16 2020-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 21,905 -2,466 -10.12 1,519 8.58 0.3693
2020-11-16 2020-09-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 24,371 26 0.11 1,399 6.79 0.4088
2020-08-14 2020-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 24,345 56 0.23 1,310 25.96 0.4139
2020-05-15 2020-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 24,289 63 0.26 1,040 -24.80 0.3923
2020-02-14 2019-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 24,226 84 0.35 1,383 6.63 0.4184
2019-11-14 2019-09-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 24,142 75 0.31 1,297 -0.69 0.4447
2019-08-14 2019-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 24,067 563 2.40 1,306 5.75 0.4638
2019-05-15 2019-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 23,504 61 0.26 1,235 14.88 0.4479
2019-02-14 2018-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 23,443 94 0.40 1,075 -17.69 0.4415
2018-11-13 2018-09-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 23,349 75 0.32 1,306 3.90 0.4421
2018-08-14 2018-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 23,274 15,532 200.62 1,257 3.12 0.4389
2018-05-15 2018-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,742 15 0.19 1,219 1.50 0.4367
2018-02-14 2017-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,727 112 1.47 1,201 6.95 0.4326
2017-11-14 2017-09-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,615 22 0.29 1,123 3.31 0.4210
2017-08-14 2017-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,593 20 0.26 1,087 3.13 0.4202
2017-05-15 2017-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,573 20 0.26 1,054 4.88 0.4171
2017-02-14 2016-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,553 32 0.43 1,005 4.80 0.4126
2016-11-14 2016-09-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,521 -200 -2.59 959 0.95 0.3986
2016-08-15 2016-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,721 22 0.29 950 4.05 0.4120
2016-05-16 2016-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,699 -79 -1.02 913 -0.33 0.4049
2016-02-16 2015-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,778 122 1.59 916 3.15 0.4157
2015-11-16 2015-09-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 7,656 -784 -9.29 888 -15.99 0.4160
2015-08-14 2015-06-30 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 8,440 22 0.26 1,057 -0.75 0.4766
2015-05-15 2015-03-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 8,418 22 0.26 1,065 7.04 0.4939
2015-02-17 2014-12-31 13F Spdr S&P 400 Mid Cap Growth Etf ET 78464A821 8,396 557 7.11 995 12.56 0.5010
2014-11-14 2014-09-30 13F Spdr S&P 400 Mid Cap Growth Etf SK 78464A821 7,839 1,274 19.41 884 15.56 0.4720
2014-08-14 2014-06-30 13F Spdr S&P 400 Mid Cap Growth Etf SK 78464A821 6,565 1,190 22.14 765 24.80 0.4130
2014-05-15 2014-03-31 13F Spdr S&P 400 Mid Cap Growth Etf SK 78464A821 5,375 5,375 613 0.3522
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.