Stagwell Inc.
US ˙ NasdaqGS ˙ US85256A1097

SecuritySTGW / Stagwell Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership200,063 shares
Latest Disclosed Value $ 900,283
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 34.80% increase in ownership of STGW / Stagwell Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 200,063 shares of Stagwell Inc. (US:STGW) valued at $900,284 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 148,416 shares of Stagwell Inc.. This represents a change in shares of 34.80% during the quarter. The current value of the position is $1,288,406 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)
2025-08-26 2025-06-30 NP Stagwell EC US85256A1097 200,063 51,647 34.80 900 0.33 0.0202
2025-05-28 2025-03-31 NP Stagwell EC US85256A1097 148,416 0 0.00 898 -8.09 0.0215
2025-02-25 2024-12-31 NP Stagwell EC US85256A1097 148,416 -20,384 -12.08 977 -17.57 0.0213
2024-11-26 2024-09-30 NP Stagwell EC US85256A1097 168,800 13,796 8.90 1,185 12.02 0.0224
2024-08-26 2024-06-30 NP Stagwell EC US85256A1097 155,004 14,680 10.46 1,057 21.22 0.0215
2024-05-28 2024-03-31 NP Stagwell EC US85256A1097 140,324 0 0.00 873 -6.24 0.0182
2024-02-26 2023-12-31 NP Stagwell EC US85256A1097 140,324 8,890 6.76 930 50.97 0.0199
2023-11-28 2023-09-30 NP Stagwell EC US85256A1097 131,434 -55,777 -29.79 616 -54.34 0.0161
2023-08-25 2023-06-30 NP Stagwell EC US85256A1097 187,211 61,529 48.96 1,350 44.74 0.0320
2023-05-26 2023-03-31 NP Stagwell EC US85256A1097 125,682 0 0.00 933 19.49 0.0248
2023-02-24 2022-12-31 NP Stagwell EC US85256A1097 125,682 5,018 4.16 780 -6.92 0.0215
2022-11-25 2022-09-30 NP Stagwell EC US85256A1097 120,664 0 0.00 839 27.94 0.0240
2022-08-25 2022-06-30 NP Stagwell EC US85256A1097 120,664 25,735 27.11 655 -4.66 0.0181
2022-05-26 2022-03-31 NP Stagwell EC US85256A1097 94,929 0 0.00 687 -16.52 0.0160
2022-02-25 2021-12-31 NP Stagwell EC US85256A1097 94,929 5,359 5.98 823 19.80 0.0179
2021-11-24 2021-09-30 NP Stagwell EC US85256A1097 89,570 13,741 18.12 687 55.08 0.0151
2021-08-26 2021-06-30 NP MDC Partners EC CA5526971042 75,829 -12,220 -13.88 444 248.82 0.0095
2020-06-01 2020-03-31 NP MDC Partners EC CA5526971042 88,049 0 0.00 128 -47.95 0.0052
2020-02-27 2019-12-31 NP MDC Partners EC 552697104 88,049 -22,362 -20.25 245 -21.54 0.0074
2019-11-27 2019-09-30 NP MDC Partners EC CA5526971042 110,411 110,411 311 0.0103
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.