Millicom International Cellular SA

SecurityTIGO / Millicom International Cellular S.A.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership6,000,897 shares
Latest Disclosed Value $ 449,707,192
BlackRock, Inc. reports 10.62% increase in ownership of TIGO / Millicom International Cellular S.A.

On May 13, 2026 - BlackRock, Inc. filed a 13F-HR form disclosing ownership of 6,000,897 shares of Millicom International Cellular S.A. (US:TIGO) valued at $449,707,221 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 5,424,834 shares of Millicom International Cellular S.A.. This represents a change in shares of 10.62% during the quarter. The current value of the position is $523,818,299 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)
2026-05-13 2026-03-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 6,000,897 576,063 10.62 449,707 49.53 0.0006
2026-02-12 2025-12-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 5,424,834 121,448 2.29 300,753 16.83 0.0051
2025-11-12 2025-09-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 5,303,386 348,047 7.02 257,426 38.64 0.0045
2025-08-12 2025-06-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 4,955,339 2,498,582 101.70 185,677 149.68 0.0035
2025-05-02 2025-03-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 2,456,757 2,426,347 7,978.78 74,366 9,685.00 0.0016
2025-02-07 2024-12-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 30,410 15,062 98.14 761 82.69 0.0000
2024-11-13 2024-09-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 15,348 2,928 23.57 416 36.84 0.0000
2024-08-13 2024-06-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 12,420 3,807 44.20 305 74.71 0.0000
2024-05-10 2024-03-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 8,613 4,714 120.90 174 148.57 0.0000
2024-02-13 2023-12-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 3,899 -636 -14.02 70 0.00 0.0000
2023-11-13 2023-09-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 4,535 2,261 99.43 70 105.88 0.0000
2023-08-11 2023-06-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 2,274 1,190 109.78 35 70.00 0.0000
2023-05-12 2023-03-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 1,084 973 876.58 21 1,900.00 0.0000
2023-02-13 2022-12-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 111 -17,158 -99.36 1 -99.49 0.0000
2022-11-14 2022-09-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 17,269 16,229 1,560.48 197 1,213.33 0.0000
2022-08-12 2022-06-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 1,040 929 836.94 15 400.00 0.0000
2022-05-12 2022-03-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 111 0 0.00 3 0.00 0.0000
2022-02-10 2021-12-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 111 -4,024 -97.32 3 -97.99 0.0000
2021-11-09 2021-09-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 4,135 -369 -8.19 149 -16.29 0.0000
2021-08-11 2021-06-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 4,504 0 0.00 178 3.49 0.0000
2021-05-07 2021-03-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 4,504 4,504 172 0.0000
2021-02-05 2020-12-31 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 0 -24 -100.00 0 -100.00
2020-11-06 2020-09-30 13F MILLICOM INTL CELLULAR S A COM STK L6388F110 24 24 1 0.0000
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.