Eaton Vance Tax-Managed Buy-Write Income Fund
US ˙ NYSE ˙ US27828X1000

SecurityETB / Eaton Vance Tax-Managed Buy-Write Income Fund
InstitutionUBS Group AG
Latest Disclosed Ownership376,208 shares
Latest Disclosed Value $ 5,424,919
UBS Group AG reports 2.83% increase in ownership of ETB / Eaton Vance Tax-Managed Buy-Write Income Fund

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 376,208 shares of Eaton Vance Tax-Managed Buy-Write Income Fund (US:ETB) valued at $5,424,919 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 365,852 shares of Eaton Vance Tax-Managed Buy-Write Income Fund. This represents a change in shares of 2.83% during the quarter. The current value of the position is $5,827,462 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)
2026-05-05 2026-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 376,208 10,356 2.83 5,425 -2.90 0.0002
2026-01-29 2025-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 365,852 5,973 1.66 5,587 3.48 0.0002
2025-11-13 2025-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 359,879 -2,042 -0.56 5,398 3.29 0.0008
2025-08-14 2025-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 361,921 3,599 1.00 5,226 6.85 0.0009
2025-05-13 2025-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 358,322 -13,647 -3.67 4,891 -12.33 0.0009
2025-02-14 2024-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 371,969 -33 -0.01 5,580 3.95 0.0010
2024-11-14 2024-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 372,002 -1,226 -0.33 5,368 1.86 0.0012
2024-08-14 2024-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 373,228 1,077 0.29 5,270 3.74 0.0013
2024-05-13 2024-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 372,151 -19,993 -5.10 5,080 -0.22 0.0013
2024-02-09 2023-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 392,144 -43,558 -10.00 5,090 -7.35 0.0015
2023-11-09 2023-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 435,702 8,315 1.95 5,494 -7.45 0.0019
2023-08-11 2023-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 427,387 8,560 2.04 5,936 8.62 0.0020
2023-05-12 2023-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 418,827 -761 -0.18 5,466 -0.94 0.0020
2023-02-08 2022-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 419,588 -1,633 -0.39 5,518 -0.84 0.0021
2022-11-10 2022-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 421,221 -25,373 -5.68 5,564 -17.12 0.0024
2022-08-10 2022-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 446,594 -138,524 -23.67 6,713 -32.11 0.0028
2022-05-16 2022-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 585,118 30,479 5.50 9,888 4.13 0.0033
2022-02-14 2021-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 554,639 36,567 7.06 9,496 14.49 0.0027
2021-11-15 2021-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 518,072 3,689 0.72 8,294 -3.92 0.0026
2021-08-13 2021-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 514,383 17,823 3.59 8,632 10.44 0.0028
2021-05-12 2021-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 496,560 2,951 0.60 7,816 5.56 0.0026
2021-02-11 2020-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 493,609 -233,273 -32.09 7,404 -25.32 0.0025
2020-11-12 2020-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 726,882 -15,381 -2.07 9,914 -4.19 0.0037
2020-07-31 2020-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 742,263 32,821 4.63 10,348 19.66 0.0044
2020-05-01 2020-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 709,442 -107,597 -13.17 8,648 -35.46 0.0041
2020-02-14 2019-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 817,039 44,411 5.75 13,400 10.82 0.0047
2019-11-14 2019-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 772,628 34,345 4.65 12,092 4.66 0.0047
2019-08-14 2019-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 738,283 8,474 1.16 11,554 1.35 0.0044
2019-05-14 2019-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 729,809 68,468 10.35 11,400 28.16 0.0047
2019-02-14 2018-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 661,341 -60,297 -8.36 8,895 -25.97 0.0040
2018-11-14 2018-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 721,638 42,212 6.21 12,015 9.98 0.0048
2018-08-14 2018-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 679,426 -3,416 -0.50 10,925 2.62 0.0047
2018-05-15 2018-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 682,842 68,299 11.11 10,646 3.55 0.0046
2018-02-14 2017-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 614,543 13,592 2.26 10,281 2.14 0.0042
2017-11-14 2017-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 600,951 2,058 0.34 10,066 2.48 0.0047
2017-11-14 2017-06-30 13F/A-1 EATON VANCE TAX MNGED BUY WR COM 27828X100 598,893 71,656 13.59 9,822 14.36 0.0051
2017-08-14 2017-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 598,893 71,656 9,822
2017-11-14 2017-03-31 13F/A-1 EATON VANCE TAX MNGED BUY WR COM 27828X100 527,237 58,153 12.40 8,589 10.84 0.0047
2017-05-12 2017-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 527,237 58,153 8,589
2017-02-14 2016-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 469,084 116,502 33.04 7,749 32.80 0.0043
2016-11-14 2016-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 352,582 70,747 25.10 5,835 27.10 0.0035
2016-08-12 2016-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 281,835 107,176 61.36 4,591 62.05 0.0029
2016-05-12 2016-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 174,659 -19,016 -9.82 2,833 -12.35 0.0019
2016-02-16 2015-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 193,675 6,479 3.46 3,232 13.09 0.0021
2015-11-13 2015-09-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 187,196 -12,729 -6.37 2,858 -7.63 0.0020
2015-08-14 2015-06-30 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 199,925 1,176 0.59 3,094 -1.84 0.0021
2015-05-14 2015-03-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 198,749 10,477 5.56 3,152 5.28 0.0022
2015-02-17 2014-12-31 13F EATON VANCE TAX MNGED BUY WR COM 27828X100 188,272 188,272 2,994 0.0021
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.