偉大的公司
MX ˙ BMV ˙ US55955D1000
SecurityMX:MGNI / Magnite, Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership58,260 shares
Latest Disclosed Value $ 692,129
Advisory Services Network, LLC reports 3.07% increase in ownership of MGNI / Magnite, Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 58,260 shares of Magnite, Inc. (MX:MGNI) valued at $692,129 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 56,527 shares of Magnite, Inc.. This represents a change in shares of 3.07% during the quarter.

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 MAGNITE INC COM Stock 55955D100 58,260 1,733 3.07 692 -24.54 0.0064
2026-02-17 2025-12-31 13F MAGNITE INC COM Stock 55955D100 56,527 -7,086 -11.14 917 -33.79 0.0130
2025-11-18 2025-09-30 13F MAGNITE Stock 55955D100 63,613 -1,794 -2.74 1,385 -7.97 0.0203
2025-08-19 2025-06-30 13F MAGNITE Stock 55955D100 65,407 -18,303 -21.86 1,505 57.59 0.0242
2025-05-15 2025-03-31 13F MAGNITE Stock 55955D100 83,710 -43,832 -34.37 955 -52.96 0.0184
2025-02-13 2024-12-31 13F MAGNITE Stock 55955D100 127,542 10,221 8.71 2,030 30.21 0.0378
2024-11-14 2024-09-30 13F MAGNITE Stock 55955D100 117,321 0 0.00 1,559 0.00 0.0322
2024-08-13 2024-06-30 13F MAGNITE Stock 55955D100 117,321 -12,441 -9.59 1,559 11.84 0.0322
2024-05-06 2024-03-31 13F MAGNITE Stock 55955D100 129,762 2,656 2.09 1,395 17.44 0.0309
2024-02-09 2023-12-31 13F MAGNITE Stock 55955D100 127,106 2,377 1.91 1,187 26.28 0.0290
2023-11-14 2023-09-30 13F MAGNITE Stock 55955D100 124,729 10,810 9.49 940 -39.51 0.0253
2023-08-09 2023-06-30 13F MAGNITE Stock 55955D100 113,919 -148 -0.13 1,555 47.16 0.0414
2023-05-17 2023-03-31 13F MAGNITE Stock 55955D100 114,067 258 0.23 1,056 -12.37 0.0293
2023-02-13 2022-12-31 13F MAGNITE Stock 55955D100 113,809 28,083 32.76 1,205 114.03 0.0369
2022-11-14 2022-09-30 13F MAGNITE Stock 55955D100 85,726 -9,123 -9.62 563 -33.14 0.0199
2022-08-02 2022-06-30 13F MAGNITE Stock 55955D100 94,849 -4,927 -4.94 842 -36.12 0.0288
2022-05-23 2022-03-31 13F MAGNITE Stock 55955D100 99,776 7,024 7.57 1,318 -18.79 0.0388
2022-02-14 2021-12-31 13F MAGNITE Stock 55955D100 92,752 4,330 4.90 1,623 -34.45 0.0467
2021-11-05 2021-09-30 13F MAGNITE Stock 55955D100 88,422 -6,243 -6.59 2,476 -22.70 0.0787
2021-08-12 2021-06-30 13F MAGNITE Stock 55955D100 94,665 -4,750 -4.78 3,203 -22.58 0.1010
2021-05-24 2021-03-31 13F MAGNITE Stock 55955D100 99,415 37,977 61.81 4,137 119.35 0.1537
2021-02-09 2020-12-31 13F MAGNITE Stock 55955D100 61,438 58,314 1,866.65 1,886 8,472.73 0.0757
2020-11-16 2020-09-30 13F MAGNITE Stock 55955D100 3,124 3,124 22 0.0010
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.