% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for ETO in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| Karpus Management, Inc. | 695K | 659K | 644K | 625K | 613K | 646K | $17M |
| 1607 Capital Partners, LLC | 249K | 255K | 255K | 221K | 239K | 246K | $7M |
| GUGGENHEIM CAPITAL LLC | 33K | 32K | 56K | 103K | 158K | 182K | $5M |
| MORGAN STANLEY | 110K | 117K | 137K | 147K | 165K | 172K | $5M |
| Shaker Financial Services, LLC | 43K | 42K | 86K | 97K | 114K | 151K | $4M |
| FLAGSHIP HARBOR ADVISORS, LLC | 124K | 123K | 129K | 130K | 131K | 133K | $4M |
| FIRST TRUST ADVISORS LP | 102K | 104K | 102K | 119K | 117K | 130K | $3M |
| LPL Financial LLC | 109K | 119K | 122K | 127K | 129K | 125K | $3M |
| Advisors Asset Management, Inc. | 198K | 175K | 179K | 172K | 180K | 123K | $3M |
| BANK OF AMERICA CORP /DE/ | 125K | 119K | 107K | 87K | 82K | 100K | $3M |
| WELLS FARGO & COMPANY/MN | 100K | 103K | 96K | 113K | 92K | 91K | $2M |
| RAYMOND JAMES FINANCIAL INC | 74K | 74K | 77K | 65K | 63K | 66K | $2M |
| &PARTNERS | — | — | 22K | 24K | 61K | 65K | $2M |
| Formidable Asset Management, LLC | 68K | 61K | 61K | 59K | 55K | 52K | $2M |
| Hennion & Walsh Asset Management, Inc. | 43K | 41K | 82K | 80K | 58K | 58K | $2M |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| WOLVERINE ASSET MANAGEMENT LLC | +47,873 | $1M | OPEN |
| Shaker Financial Services, LLC | +37,059 | $987,622 | ADD |
| Karpus Management, Inc. | +33,068 | $881,262 | ADD |
| GUGGENHEIM CAPITAL LLC | +24,383 | $649,807 | ADD |
| READYSTATE ASSET MANAGEMENT LP | +18,617 | $496,143 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Cornerstone Advisors, LLC | −158,450 | $4M | CLOSE |
| Advisors Asset Management, Inc. | −56,680 | $2M | TRIM |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | −25,786 | $687,197 | TRIM |
| Corient Private Wealth LLC | −24,842 | $662,039 | TRIM |
| Invesco Ltd. | −21,150 | $563,648 | CLOSE |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 66 | 3,120,801 | — | $84M |
| 2025-Q4 | 70 | 3,236,566 | — | $98M |
| 2025-Q3 | 71 | 3,122,944 | — | $86M |
| 2025-Q2 | 63 | 3,184,970 | — | $86M |
| 2025-Q1 | 57 | 3,142,364 | — | $77M |
| 2024-Q4 | 58 | 3,201,655 | — | $81M |
| 2024-Q3 | 64 | 3,426,292 | — | $92M |
| 2024-Q2 | 60 | 3,301,299 | — | $84M |
| 2024-Q1 | 58 | 3,430,250 | — | $86M |
| 2023-Q4 | 58 | 3,111,814 | — | $74M |
| 2023-Q3 | 53 | 2,801,898 | — | $60M |
| 2023-Q2 | 51 | 2,565,979 | — | $59M |
| 2023-Q1 | 52 | 2,368,830 | — | $53M |
| 2022-Q4 | 50 | 2,019,138 | — | $42M |
| 2022-Q3 | 46 | 1,509,886 | — | $31M |
| 2022-Q2 | 46 | 1,587,651 | — | $35M |
| 2022-Q1 | 49 | 1,737,119 | — | $52M |
| 2021-Q4 | 49 | 1,551,223 | — | $50M |
| 2021-Q3 | 50 | 1,660,813 | — | $50M |
| 2021-Q2 | 53 | 1,689,096 | — | $49M |
| 2021-Q1 | 51 | 1,724,095 | — | $45M |
| 2020-Q4 | 53 | 1,704,853 | — | $43M |
| 2020-Q3 | 47 | 1,635,490 | — | $34M |
| 2020-Q2 | 47 | 1,517,381 | — | $32M |
| 2020-Q1 | 44 | 1,542,358 | — | $27M |
| 2019-Q4 | 43 | 1,200,670 | — | $31M |
| 2019-Q3 | 44 | 1,155,145 | — | $30M |
| 2019-Q2 | 39 | 1,202,768 | — | $29M |
| 2019-Q1 | 39 | 1,268,126 | — | $30M |
| 2018-Q4 | 36 | 1,466,494 | — | $28M |
| 2018-Q3 | 40 | 1,583,794 | — | $40M |
| 2018-Q2 | 40 | 1,547,280 | — | $38M |
| 2018-Q1 | 39 | 1,484,073 | — | $37M |
| 2017-Q4 | 41 | 1,622,704 | — | $41M |
| 2017-Q3 | 35 | 1,556,575 | — | $38M |
| 2017-Q2 | 39 | 1,655,904 | — | $40M |
| 2017-Q1 | 36 | 1,824,259 | — | $42M |
| 2016-Q4 | 33 | 1,852,547 | — | $39M |
| 2016-Q3 | 28 | 1,374,918 | — | $30M |
| 2016-Q2 | 29 | 1,270,564 | — | $27M |
| 2016-Q1 | 26 | 1,281,735 | — | $28M |
| 2015-Q4 | 30 | 1,307,016 | — | $28M |
| 2015-Q3 | 24 | 1,240,246 | — | $26M |
| 2015-Q2 | 29 | 1,516,519 | — | $35M |
| 2015-Q1 | 30 | 1,751,613 | — | $43M |
| 2014-Q4 | 35 | 2,150,397 | — | $56M |
| 2014-Q3 | 37 | 2,375,367 | — | $63M |
| 2014-Q2 | 39 | 2,415,670 | — | $67M |
| 2014-Q1 | 40 | 2,654,656 | — | $68M |
| 2013-Q4 | 39 | 2,554,641 | — | $63M |
| 2013-Q3 | 40 | 2,486,330 | — | $56M |
| 2013-Q2 | 33 | 2,481,570 | — | $56M |
| 2013-Q1 | 1 | 9,000 | — | $209,000 |
