Ecopetrol S.A. - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US2791581091

SecurityEC / Ecopetrol S.A. - Depositary Receipt (Common Stock)
InstitutionBlackRock, Inc.
Latest Disclosed Ownership2,729,497 shares
Latest Disclosed Value $ 40,915,168
BlackRock, Inc. reports 78.68% increase in ownership of EC / Ecopetrol S.A. - Depositary Receipt (Common Stock)

On May 13, 2026 - BlackRock, Inc. filed a 13F-HR form disclosing ownership of 2,729,497 shares of Ecopetrol S.A. - Depositary Receipt (Common Stock) (US:EC) valued at $40,915,160 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,527,623 shares of Ecopetrol S.A. - Depositary Receipt (Common Stock). This represents a change in shares of 78.68% during the quarter. The current value of the position is $41,351,880 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 ECOPETROL S A SPONSORED ADS 279158109 2,729,497 1,201,874 78.68 40,915 167.31 0.0007
2026-02-12 2025-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,527,623 172,919 12.76 15,307 22.68 0.0003
2025-11-12 2025-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,354,704 38,148 2.90 12,477 7.08 0.0002
2025-08-12 2025-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,316,556 -11,871 -0.89 11,652 -15.99 0.0002
2025-05-02 2025-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,328,427 148,687 12.60 13,869 48.43 0.0003
2025-02-07 2024-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,179,740 -52,544 -4.26 9,344 -15.09 0.0002
2024-11-13 2024-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,232,284 -54,327 -4.22 11,004 -23.57 0.0002
2024-08-13 2024-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,286,611 -1,285,840 -49.99 14,397 -52.73 0.0003
2024-05-10 2024-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 2,572,451 -698,206 -21.35 30,458 -21.88 0.0007
2024-02-13 2023-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 3,270,657 -924,500 -22.04 38,986 -19.75 0.0010
2023-11-13 2023-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 4,195,157 -2,966,076 -41.42 48,580 -33.82 0.0014
2023-08-11 2023-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 7,161,233 2,239,289 45.50 73,403 41.23 0.0020
2023-05-12 2023-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 4,921,944 348,927 7.63 51,976 8.55 0.0015
2023-02-13 2022-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 4,573,017 -572,188 -11.12 47,879 4.20 0.0015
2022-11-14 2022-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 5,145,205 298,224 6.15 45,948 -12.71 0.0016
2022-08-12 2022-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 4,846,981 2,070,092 74.55 52,638 1.91 0.0017
2022-05-12 2022-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 2,776,889 1,374,075 97.95 51,650 185.61 0.0014
2022-02-10 2021-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,402,814 -466,491 -24.96 18,084 -32.59 0.0005
2021-11-09 2021-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,869,305 -192,351 -9.33 26,825 -11.01 0.0008
2021-08-11 2021-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 2,061,656 -314,754 -13.24 30,144 -1.06 0.0008
2021-05-07 2021-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 2,376,410 906,480 61.67 30,467 60.54 0.0009
2021-02-05 2020-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,469,930 122,452 9.09 18,978 43.14 0.0006
2020-11-06 2020-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,347,478 -574,893 -29.91 13,258 -38.04 0.0005
2020-08-14 2020-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,922,371 -996,230 -34.13 21,397 -22.91 0.0009
2020-05-01 2020-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 2,918,601 -1,831,574 -38.56 27,755 -70.73 0.0014
2020-02-13 2019-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 4,750,175 -1,115,589 -19.02 94,815 -5.08 0.0036
2019-11-08 2019-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 5,865,764 2,380,832 68.32 99,893 56.72 0.0042
2019-08-22 2019-06-30 13F/A-1 ECOPETROL S A SPONSORED ADS 279158109 3,484,932 2,145,328 160.15 63,741 121.93 0.0027
2019-08-13 2019-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 3,484,932 2,145,328 63,741
2019-05-09 2019-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,339,604 181,314 15.65 28,721 56.14 0.0013
2019-02-08 2018-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,158,290 -167,042 -12.60 18,394 -48.46 0.0009
2018-11-09 2018-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,325,332 149,455 12.71 35,691 47.70 0.0015
2018-08-09 2018-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 1,175,877 -52,713 -4.29 24,164 1.75 0.0011
2018-05-09 2018-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,228,590 -656,154 -34.81 23,749 -13.87 0.0011
2018-02-09 2017-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 1,884,744 -639,655 -25.34 27,574 15.10 0.0013
2017-11-14 2017-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 2,524,399 82,936 3.40 23,957 7.95 0.0012
2017-08-10 2017-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 2,441,463 224,701 10.14 22,192 7.42 0.0012
2017-05-12 2017-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 2,216,762 2,207,066 22,762.64 20,660 23,377.27 0.0011
2017-02-10 2016-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 9,696 0 0.00 88 3.53 0.0001
2016-11-08 2016-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 9,696 -18,051 -65.06 85 -67.92 0.0001
2016-08-10 2016-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 27,747 0 0.00 265 11.34 0.0004
2016-05-10 2016-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 27,747 3,223 13.14 238 38.37 0.0004
2016-02-11 2015-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 24,524 -23,565 -49.00 172 -58.45 0.0003
2015-11-13 2015-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 48,089 0 0.00 414 -35.11 0.0006
2015-08-07 2015-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 48,089 -61,933 -56.29 638 -61.91 0.0009
2015-05-13 2015-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 110,022 12,981 13.38 1,675 0.78 0.0023
2015-02-09 2014-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 97,041 1,216 1.27 1,662 -44.53 0.0024
2014-10-29 2014-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 95,825 2,232 2.38 2,996 -11.20 0.0044
2014-08-06 2014-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 93,593 -33,148 -26.15 3,374 -34.74 0.0050
2014-05-02 2014-03-31 13F ECOPETROL S A SPONSORED ADS 279158109 126,741 0 0.00 5,170 6.09 0.0083
2014-02-12 2013-12-31 13F ECOPETROL S A SPONSORED ADS 279158109 126,741 7,241 6.06 4,873 -11.35 0.0080
2013-11-12 2013-09-30 13F ECOPETROL S A SPONSORED ADS 279158109 119,500 0 0.00 5,497 9.37 0.0104
2013-08-13 2013-06-30 13F ECOPETROL S A SPONSORED ADS 279158109 119,500 119,500 5,026 0.0100
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.