Who owns Tigo Energy, Inc. (TYGO)
Which tracked institutional funds hold TYGO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TYGO company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on TYGO is one-sided between 2025-Q4 and 2026-Q1: 17 added or opened and 4 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
TYGO’s largest tracked holder by dollar value, AIGH Capital Management LLC, sizes it at 5.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 5.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in TYGO divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 50 tracked filers holding TYGO, 36 increased or opened the position and 24 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in TYGO between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 4
- AIGH Capital Management LLC$27M
- VANGUARD CAPITAL MANAGEMENT LLC$8M
- MILLENNIUM MANAGEMENT LLC$3M
- VANGUARD FIDUCIARY TRUST CO$795K
Full exits 3
- VANGUARD GROUP INC$3M
- GENERATION INVESTMENT MANAGEMENT LLP$2M
- Tenzing Global Management, LLC$2M
Largest adds
- AWM Investment Company, Inc.$8M
- RENAISSANCE TECHNOLOGIES LLC$3M
- Walleye Capital LLC$2M
- ACADIAN ASSET MANAGEMENT LLC$2M
- BANK OF AMERICA CORP /DE/$1M
- GOLDMAN SACHS GROUP INC$1M
Largest trims
- CITADEL ADVISORS LLC$373K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| AIGH Capital Management LLC new | 7,280,312 | $27M | 33.4% | 2026-Q1 |
| AWM Investment Company, Inc. added | 2,150,930 | $8M | 9.9% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,036,697 | $8M | 9.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,298,877 | $5M | 6.0% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 785,394 | $3M | 3.6% | 2026-Q1 |
| Walleye Capital LLC added | 651,158 | $2M | 3.0% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 625,888 | $2M | 2.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 471,036 | $2M | 2.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 466,109 | $2M | 2.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 372,677 | $1M | 1.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 327,130 | $1M | 1.5% | 2026-Q1 |
| Man Group plc added | 311,661 | $1M | 1.4% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 269,419 | $1M | 1.2% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 211,437 | $795K | 1.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 171,393 | $644K | 0.8% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 146,910 | $552K | 0.7% | 2026-Q1 |
| Hillsdale Investment Management Inc. trimmed | 130,100 | $489K | 0.6% | 2026-Q1 |
| STATE STREET CORP added | 129,956 | $489K | 0.6% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP new | 127,238 | $478K | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 101,395 | $381K | 0.5% | 2026-Q1 |
| BlackRock, Inc. added | 86,635 | $326K | 0.4% | 2026-Q1 |
| JONES FINANCIAL COMPANIES LLLP new | 69,040 | $276K | 0.3% | 2026-Q1 |
| BARCLAYS PLC added | 65,000 | $244K | 0.3% | 2026-Q1 |
| NORTHERN TRUST CORP added | 63,962 | $240K | 0.3% | 2026-Q1 |
| Worth Venture Partners, LLC added | 61,425 | $231K | 0.3% | 2026-Q1 |
| UBS Group AG added | 53,945 | $203K | 0.2% | 2026-Q1 |
| MANGROVE PARTNERS IM, LLC trimmed | 53,390 | $201K | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 55,527 | $192K | 0.2% | 2026-Q1 |
| XTX Topco Ltd trimmed | 45,507 | $171K | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 43,220 | $163K | 0.2% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 41,158 | $155K | 0.2% | 2026-Q1 |
| AXQ CAPITAL, LP new | 39,329 | $148K | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 36,630 | $137K | 0.2% | 2026-Q1 |
| OMERS ADMINISTRATION Corp trimmed | 33,200 | $125K | 0.2% | 2026-Q1 |
| Graham Capital Management, L.P. new | 31,224 | $117K | 0.1% | 2026-Q1 |
| Centiva Capital, LP trimmed | 28,833 | $108K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO new | 28,420 | $107K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP new | 24,346 | $92K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC new | 23,266 | $87K | 0.1% | 2026-Q1 |
| CITIGROUP INC added | 20,717 | $78K | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 17,656 | $66K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 13,165 | $50K | 0.1% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 12,294 | $46K | 0.1% | 2026-Q1 |
| Crusonia Wealth Advisors LLC new | 11,512 | $43K | 0.1% | 2026-Q1 |
| CREATIVE FINANCIAL DESIGNS INC /ADV | 6,906 | $26K | 0.0% | 2026-Q1 |
| MORGAN STANLEY added | 6,286 | $24K | 0.0% | 2026-Q1 |
| Tower Research Capital LLC (TRC) trimmed | 3,390 | $13K | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 399 | $2K | 0.0% | 2026-Q1 |
| SBI Securities Co., Ltd. | 87 | $327 | 0.0% | 2026-Q1 |
| FMR LLC trimmed | 28 | $106 | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 1,992,568 | $3M | 3.4% | 2025-Q4 stale |
| GENERATION INVESTMENT MANAGEMENT LLP trimmed | 1,658,857 | $2M | 2.8% | 2025-Q4 stale |
| WELLINGTON MANAGEMENT GROUP LLP new | 905,112 | $2M | 2.8% | 2025-Q3 stale |
| Tenzing Global Management, LLC added | 1,562,950 | $2M | 2.6% | 2025-Q4 stale |
| JANE STREET GROUP, LLC added | 86,792 | $217K | 0.3% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 149,900 | $207K | 0.3% | 2025-Q4 stale |
| Quadrature Capital Ltd added | 77,187 | $107K | 0.1% | 2025-Q4 stale |
| Heron Bay Capital Management new | 55,179 | $76K | 0.1% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC trimmed | 17,622 | $44K | 0.1% | 2025-Q3 stale |
| Wealthstar Advisors, LLC added | 29,387 | $41K | 0.0% | 2025-Q4 stale |
| Potomac Capital Management, Inc. new | 27,880 | $38K | 0.0% | 2025-Q4 stale |
| GSA CAPITAL PARTNERS LLP added | 25,733 | $36K | 0.0% | 2025-Q4 stale |
| Virtu Financial LLC trimmed | 13,796 | $34K | 0.0% | 2025-Q3 stale |
| Scientech Research LLC new | 13,113 | $33K | 0.0% | 2025-Q3 stale |
| TWO SIGMA SECURITIES, LLC trimmed | 11,699 | $29K | 0.0% | 2025-Q3 stale |
| Point72 Asset Management, L.P. new | 13,419 | $19K | 0.0% | 2025-Q4 stale |
| ANCHYRA PARTNERS LLC new | 10,000 | $14K | 0.0% | 2025-Q4 stale |
| NewEdge Advisors, LLC trimmed | 2,651 | $4K | 0.0% | 2025-Q4 stale |
| Atlantic Union Bankshares Corp new | 750 | $2K | 0.0% | 2025-Q3 stale |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.