Fidelity Merrimack Street Trust - Fidelity Total Bond ETF
US ˙ ARCA ˙ US3161883091

SecurityFBND / Fidelity Merrimack Street Trust - Fidelity Total Bond ETF
InstitutionMorgan Stanley
Latest Disclosed Ownership35,490,785 shares
Latest Disclosed Value $ 1,619,089,640
Morgan Stanley reports 2.23% increase in ownership of FBND / Fidelity Merrimack Street Trust - Fidelity Total Bond ETF

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 35,490,785 shares of Fidelity Merrimack Street Trust - Fidelity Total Bond ETF (US:FBND) valued at $1,619,089,612 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 34,716,320 shares of Fidelity Merrimack Street Trust - Fidelity Total Bond ETF. This represents a change in shares of 2.23% during the quarter. The current value of the position is $1,612,701,270 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 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 35,490,785 774,465 2.23 1,619,090 1.30 0.0975
2026-05-27 2025-12-31 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 34,716,320 4,830,198 16.16 1,598,339 15.66 0.0954
2026-02-13 2025-12-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 34,716,320 4,830,198 1,598,339 0.0954
2026-05-27 2025-09-30 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 29,886,122 754,534 2.59 1,381,934 3.69 0.0837
2025-11-14 2025-09-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 29,886,122 754,534 1,381,934 0.0837
2025-08-15 2025-06-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 29,131,588 -5,817,506 -16.65 1,332,770 -16.46 0.0868
2025-05-15 2025-03-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 34,949,094 -220,653 -0.63 1,595,426 1.10 0.1141
2025-05-15 2024-12-31 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 35,169,747 7,119,356 25.38 1,578,067 20.36 0.1106
2025-02-14 2024-12-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 35,169,747 7,119,356 1,578,067 0.1105
2025-05-14 2024-09-30 13F/A-2 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 28,050,391 4,582,801 19.53 1,311,075 24.34 0.0951
2025-02-14 2024-09-30 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 28,050,391 4,582,801 1,311,075 0.0951
2024-11-14 2024-09-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 28,050,391 4,582,801 1,311,075 0.0113
2025-05-14 2024-06-30 13F/A-2 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 23,467,590 20,657,600 735.15 1,054,399 728.15 0.0816
2024-10-17 2024-06-30 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 23,467,590 20,657,600 1,054,399 0.0816
2024-08-14 2024-06-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 23,467,590 20,657,600 1,054,399 0.0816
2024-10-17 2024-03-31 13F/A-2 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 2,809,990 883,248 45.84 127,321 43.53 0.0102
2024-08-16 2024-03-31 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 2,809,990 883,248 127,321 0.0012
2024-05-15 2024-03-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 2,809,990 883,248 127,321 0.0102
2024-08-16 2023-12-31 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 1,926,742 1,158,540 150.81 88,707 165.10 0.0078
2024-02-13 2023-12-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 1,926,742 1,158,540 88,707 0.0078
2023-11-15 2023-09-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 768,202 233,195 43.59 33,463 37.70 0.0034
2023-08-14 2023-06-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 535,007 166,783 45.29 24,300 43.46 0.0024
2023-05-15 2023-03-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 368,224 22,238 6.43 16,938 8.74 0.0018
2023-02-14 2022-12-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 345,986 -50,154 -12.66 15,576 -11.51 0.0018
2022-11-14 2022-09-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 396,140 -247,392 -38.44 17,601 -41.22 0.0024
2022-10-27 2022-06-30 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 643,532 186,826 40.91 29,944 31.74 0.0039
2022-08-15 2022-06-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 643,532 186,826 29,944 0.0008
2022-10-27 2022-03-31 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 456,706 163,951 56.00 22,730 46.44 0.0031
2022-05-13 2022-03-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 456,706 163,951 22,730 0.0031
2022-02-14 2021-12-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 292,755 14,995 5.40 15,522 5.18 0.0019
2021-11-15 2021-09-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 277,760 37,169 15.45 14,757 15.01 0.0020
2021-08-23 2021-06-30 13F/A-1 FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 240,591 68,445 39.76 12,831 42.20 0.0017
2021-08-16 2021-06-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 240,591 68,445 12,831 0.0004
2021-05-17 2021-03-31 13F FIDELITY COVINGTON TRUST TOTAL BD ETF 316188309 172,146 86,830 101.77 9,023 94.92 0.0013
2021-02-16 2020-12-31 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 85,316 -5,689 -6.25 4,629 -6.92 0.0007
2020-11-13 2020-09-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 91,005 45,818 101.40 4,973 104.15 0.0010
2020-08-14 2020-06-30 13F FIDELITY MERRIMACK STR TR TOTAL BD ETF 316188309 45,187 3,684 8.88 2,436 13.41 0.0005
2020-05-26 2020-03-31 13F/A-1 FIDELITY TOTAL BD ETF 316188309 41,503 -3,588 -7.96 2,148 -7.93 0.0006
2020-05-15 2020-03-31 13F FIDELITY TOTAL BD ETF 316188309 41,503 -3,588 2,148 165.0112
2020-02-14 2019-12-31 13F FIDELITY TOTAL BD ETF 316188309 45,091 15,251 51.11 2,333 51.20 0.0005
2019-11-14 2019-09-30 13F FIDELITY TOTAL BD ETF 316188309 29,840 12,620 73.29 1,543 75.54 0.0004
2019-08-14 2019-06-30 13F FIDELITY TOTAL BD ETF 316188309 17,220 2,314 15.52 879 17.99 0.0002
2019-05-15 2019-03-31 13F FIDELITY TOTAL BD ETF 316188309 14,906 -82 -0.55 745 2.48 0.0002
2019-02-14 2018-12-31 13F FIDELITY TOTAL BD ETF 316188309 14,988 -916 -5.76 727 -5.95 0.0002
2019-04-23 2018-09-30 13F/A-2 FIDELITY TOTAL BD ETF 316188309 15,904 -50,907 -76.20 773 -76.32 0.0002
2018-11-20 2018-09-30 13F/A-1 FIDELITY TOTAL BD ETF 316188309 15,904 0 773 0.0002
2018-11-14 2018-09-30 13F FIDELITY TOTAL BD ETF 316188309 15,904 -50,907 773
2019-04-23 2018-06-30 13F/A-1 FIDELITY TOTAL BD ETF 316188309 66,811 56,286 534.78 3,265 531.53 0.0009
2018-08-14 2018-06-30 13F FIDELITY TOTAL BD ETF 316188309 66,811 56,286 3,265
2019-04-23 2018-03-31 13F/A-1 FIDELITY TOTAL BD ETF 316188309 10,525 -745 -6.61 517 -8.66 0.0001
2018-05-14 2018-03-31 13F FIDELITY TOTAL BD ETF 316188309 10,525 -745 517
2019-04-23 2017-12-31 13F/A-1 FIDELITY TOTAL BD ETF 316188309 11,270 2,157 23.67 566 23.58 0.0002
2018-02-14 2017-12-31 13F FIDELITY TOTAL BD ETF 316188309 11,270 2,157 566
2017-11-14 2017-09-30 13F FIDELITY TOTAL BD ETF 316188309 9,113 1,390 18.00 458 18.04 0.0001
2017-08-11 2017-06-30 13F FIDELITY TOTAL BD ETF 316188309 7,723 -4,404 -36.32 388 -35.76 0.0001
2017-05-22 2017-03-31 13F/A-1 FIDELITY TOTAL BD ETF 316188309 12,127 -1,665 -12.07 604 -12.08 0.0002
2017-05-12 2017-03-31 13F FIDELITY TOTAL BD ETF 316188309 12,127 604
2017-02-22 2016-12-31 13F/A-1 FIDELITY TOTAL BD ETF 316188309 13,792 240 1.77 687 -0.72 0.0002
2017-02-13 2016-12-31 13F FIDELITY TOTAL BD ETF 316188309 13,792 687
2016-11-10 2016-09-30 13F FIDELITY TOTAL BD ETF 316188309 13,552 313 2.36 692 3.90 0.0002
2016-08-12 2016-06-30 13F FIDELITY TOTAL BD ETF 316188309 13,239 13,179 21,965.00 666 22,100.00 0.0002
2016-02-08 2015-09-30 13F/A-1 FIDELITY TOTAL BD ETF 316188309 60 -360 -85.71 3 -85.71 0.0000
2015-11-09 2015-09-30 13F FIDELITY TOTAL BD ETF 316188309 60 3
2015-08-12 2015-06-30 13F FIDELITY TOTAL BD ETF 316188309 420 -300 -41.67 21 -43.24 0.0000
2015-05-14 2015-03-31 13F FIDELITY TOTAL BD ETF 316188309 720 -168,136 -99.57 37 -99.56 0.0000
2015-02-13 2014-12-31 13F FIDELITY TOTAL BD ETF 316188309 168,856 168,856 8,448 0.0031
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.