iShares白銀信託
MX ˙ BMV ˙ US46428Q1094
SecurityMX:SLV / iShares Silver Trust
InstitutionFlagship Harbor Advisors, Llc
Latest Disclosed Ownership39,605 shares
Latest Disclosed Value $ 2,698,704
Flagship Harbor Advisors, Llc ownership in SLV / iShares Silver Trust

On April 28, 2026 - Flagship Harbor Advisors, Llc filed a 13F-HR form disclosing ownership of 39,605 shares of iShares Silver Trust (MX:SLV) valued at $2,698,704 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 39,064 shares of iShares Silver Trust. This represents a change in shares of 1.38% during the quarter.

Flagship Harbor Advisors, Llc has a history of taking positions in derivatives of the underlying security (SLV) in the form of stock options. The firm currently holds call 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.

MX:SLV / iShares Silver Trust 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)
2026-04-28 2026-03-31 13F ISHARES SILVER TR ISHARES 46428Q109 39,605 541 1.38 2,699 7.23 0.1187
2026-01-21 2025-12-31 13F ISHARES SILVER Common Stock 46428Q109 39,064 -8,241 -17.42 2,517 25.55 0.1188
2025-11-05 2025-09-30 13F ISHARES SILVER TR ISHARES 46428Q109 47,305 15,411 48.32 2,004 91.59 0.0872
2025-08-04 2025-06-30 13F ISHARES SILVER TR ISHARES 46428Q109 31,894 -21,756 -40.55 1,046 -37.06 0.0496
2025-04-22 2025-03-31 13F ISHARES SILVER TR ISHARES 46428Q109 53,650 3,033 5.99 1,663 24.77 0.0874
2025-01-21 2024-12-31 13F ISHARES SILVER TR ISHARES 46428Q109 50,617 5,393 11.93 1,333 3.74 0.0700
2024-10-21 2024-09-30 13F ISHARES SILVER TR ISHARES 46428Q109 45,224 15,775 53.57 1,285 64.19 0.0706
2025-12-02 2024-06-30 13F ISHARES SILVER TR ISHARES 46428Q109 29,449 5,749 24.26 782 45.08 0.0470
2024-04-16 2024-03-31 13F ISHARES SILVER TR ISHARES 46428Q109 23,700 -3,512 -12.91 539 -8.95 0.0346
2024-01-10 2023-12-31 13F ISHARES SILVER TR ISHARES 46428Q109 27,212 -4,044 -12.94 593 -6.77 0.0431
2023-10-17 2023-09-30 13F ISHARES SILVER TR ISHARES 46428Q109 31,256 -3,596 -10.32 636 -12.77 0.0529
2023-07-11 2023-06-30 13F ISHARES SILVER TR ISHARES 46428Q109 34,852 -6,179 -15.06 728 -19.74 0.0601
2023-04-12 2023-03-31 13F ISHARES SILVER TR ISHARES 46428Q109 41,031 -8,908 -17.84 908 -17.47 0.0855
2023-01-13 2022-12-31 13F ISHARES SILVER TR ISHARES 46428Q109 49,939 -9,016 -15.29 1,100 6.49 0.1127
2022-10-13 2022-09-30 13F ISHARES SILVER TR ISHARES 46428Q109 58,955 -11,868 -16.76 1,032 -21.82 0.1197
2022-07-13 2022-06-30 13F ISHARES SILVER TR ISHARES 46428Q109 70,823 -2,602 -3.54 1,320 -21.43 0.1483
2022-04-13 2022-03-31 13F ISHARES SILVER TR ISHARES 46428Q109 73,425 14,817 25.28 1,680 33.23 0.1619
2022-02-17 2021-12-31 13F/A-1 ISHARES SILVER TR ISHARES 46428Q109 58,608 12,783 27.90 1,261 13.60 0.1193
2022-02-10 2021-12-31 13F ISHARES SILVER TR ISHARES 46428Q109 58,608 12,783 1,261 0.1193
2021-11-01 2021-09-30 13F ISHARES SILVER TR ISHARES 46428Q109 45,825 0 0.00 1,110 0.00 0.1193
2021-07-26 2021-06-30 13F ISHARES SILVER TR ISHARES 46428Q109 45,825 -483,224 -91.34 1,110 -90.76 0.1191
2021-05-03 2021-03-31 13F ISHARES SILVER TR ISHARES 46428Q109 529,049 -282,865 -34.84 12,009 -39.80 1.3634
2021-02-08 2020-12-31 13F ISHARES SILVER TR ISHARES 46428Q109 811,914 -28,538 -3.40 19,949 9.69 2.4736
2020-10-13 2020-09-30 13F ISHARES SILVER Common Stock 46428Q109 840,452 289,504 52.55 18,187 94.08 2.4558
2020-07-31 2020-06-30 13F ISHARES SILVER Common Stock 46428Q109 550,948 -100,769 -15.46 9,371 10.18 1.3758
2020-05-12 2020-03-31 13F ISHARES SILVER Common Stock 46428Q109 651,717 172,582 36.02 8,505 6.42 1.7009
2020-02-14 2019-12-31 13F ISHARES SILVER Common Stock 46428Q109 479,135 121,402 33.94 7,992 40.33 1.3995
2019-10-22 2019-09-30 13F ISHARES SILVER Common Stock 46428Q109 357,733 138,185 62.94 5,695 81.02 1.1161
2019-07-22 2019-06-30 13F ISHARES SILVER Common Stock 46428Q109 219,548 41,318 23.18 3,146 24.50 0.6529
2019-04-15 2019-03-31 13F ISHARES SILVER Common Stock 46428Q109 178,230 42,212 31.03 2,527 28.01 0.5191
2019-01-26 2018-12-31 13F ISHARES SILVER COM 46428Q109 136,018 14,885 12.29 1,974 19.64 0.4797
2018-11-05 2018-09-30 13F ISHARES SILVER Common Stock 46428Q109 121,133 10,662 9.65 1,650 -1.37 0.3060
2018-08-14 2018-06-30 13F ISHARES SILVER Common Stock 46428Q109 110,471 90,084 441.87 1,673 421.18 0.3348
2018-04-23 2018-03-31 13F ISHARES SILVER TRUST ISHARES 46428Q109 20,387 20,387 321 0.0954
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
(%)
2022-04-13 2022-03-31 13F ISHARES SILVER TR ISHARES Call 0 -100.00 0 n/a n/a n/a
2022-02-17 2021-12-31 13F/A ISHARES SILVER TR ISHARES Call 10,000 0 n/a n/a n/a
2022-02-10 2021-12-31 13F ISHARES SILVER TR ISHARES Call 10,000 0 n/a n/a n/a
2021-11-01 2021-09-30 13F ISHARES SILVER TR ISHARES Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-07-26 2021-06-30 13F ISHARES SILVER TR ISHARES Call 35,000 0.00 48 -12.73 n/a n/a n/a
2021-05-03 2021-03-31 13F ISHARES SILVER TR ISHARES Call 35,000 -46.15 55 -55.65 n/a n/a n/a
2021-02-08 2020-12-31 13F ISHARES SILVER TR ISHARES Call 65,000 11,718.18 124 21.57 n/a n/a n/a
2020-10-13 2020-09-30 13F ISHARES SILVER TR Listed Options Call 550 102 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.