UNITIL CORP (UTL) Top Institutional Shareholders
UNITIL CORP (UTL) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $718.91M in UTL holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of UTL tracked by InsiderSet, reporting ownership valued at approximately $148.02M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $145.16M, representing an estimated loss of -1.93% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed UTL value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in UNITIL CORP (UTL).
This page ranks the largest institutional UTL shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
236
Total Reported Value
$718.91M
Largest Holder
Blackrock, Inc.
Largest Position
$148.02M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
148
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 2,833,535 | $148,023,884 | $145,161,998 | -$2,861,886 | -1.93% | |
| Vanguard Capital Management Llc | 0.00% | 810,144 | $42,321,923 | $41,503,677 | -$818,246 | -1.93% | |
| State Street Corp | 0.00% | 734,927 | $38,392,586 | $37,650,310 | -$742,276 | -1.93% | |
| Wellington Management Group Llp | 0.01% | 602,103 | $31,453,860 | $30,845,737 | -$608,123 | -1.93% | |
| Frontier Capital Management Co Llc | 0.29% | 548,780 | $28,668,267 | $28,113,999 | -$554,268 | -1.93% | |
| Manufacturers Life Insurance Company, The | 0.02% | 511,033 | $26,696,364 | $26,180,221 | -$516,143 | -1.93% | |
| Vanguard Portfolio Management Llc | 0.00% | 507,782 | $26,526,532 | $26,013,672 | -$512,860 | -1.93% | |
| Renaissance Technologies LLC | Jim Simons | 0.04% | 490,041 | $25,599,742 | $25,104,800 | -$494,942 | -1.93% |
| Geode Capital Management, Llc | 0.00% | 432,658 | $22,604,539 | $22,165,069 | -$439,470 | -1.94% | |
| Dimensional Fund Advisors Lp | 0.00% | 340,505 | $17,788,857 | $17,444,071 | -$344,786 | -1.94% | |
| Boston Trust Walden Corp | 0.15% | 340,191 | $17,771,578 | $17,427,985 | -$343,593 | -1.93% | |
| Morgan Stanley | 0.00% | 297,246 | $15,528,227 | $15,227,913 | -$300,314 | -1.93% | |
| Two Sigma Investments, Lp | 0.01% | 271,989 | $14,208,705 | $13,933,996 | -$274,709 | -1.93% | |
| Aristotle Capital Boston, Llc | 0.85% | 260,523 | $13,609,722 | $13,346,593 | -$263,129 | -1.93% | |
| Charles Schwab Investment Management Inc | 0.00% | 256,317 | $13,390,000 | $13,131,120 | -$258,880 | -1.93% | |
| Reaves W H & Co Inc | 0.22% | 248,275 | $12,969,886 | $12,719,128 | -$250,758 | -1.93% | |
| Northern Trust Corp | 0.00% | 235,608 | $12,308,162 | $12,070,198 | -$237,964 | -1.93% | |
| Goldman Sachs Group Inc | 0.00% | 206,487 | $10,786,881 | $10,578,329 | -$208,552 | -1.93% | |
| Heartland Advisors Inc | 0.40% | 150,000 | $7,836,000 | $7,684,500 | -$151,500 | -1.93% | |
| Nuveen, Llc | 0.00% | 137,269 | $7,170,932 | $7,032,291 | -$138,641 | -1.93% | |
| Hotchkis & Wiley Capital Management Llc | 0.02% | 125,319 | $6,546,665 | $6,420,092 | -$126,573 | -1.93% | |
| Proshare Advisors Llc | 0.01% | 121,166 | $6,329,711 | $6,207,334 | -$122,377 | -1.93% | |
| Citadel Advisors Llc | 0.00% | 120,967 | $6,319,316 | $6,197,139 | -$122,177 | -1.93% | |
| Vanguard Fiduciary Trust Co | 0.00% | 117,549 | $6,140,760 | $6,022,035 | -$118,725 | -1.93% | |
| Invesco Ltd. | 0.00% | 110,589 | $5,777,170 | $5,665,474 | -$111,696 | -1.93% | |
| Jane Street Group, Llc | 0.01% | 108,202 | $5,652,472 | $5,543,188 | -$109,284 | -1.93% | |
| Bank Of New York Mellon Corp | 0.00% | 103,363 | $5,399,681 | $5,295,286 | -$104,395 | -1.93% | |
| Bank Of America Corp | 0.00% | 99,576 | $5,201,849 | $5,101,278 | -$100,571 | -1.93% | |
| Russell Investments Group, Ltd. | 0.01% | 97,082 | $5,071,630 | $4,973,511 | -$98,119 | -1.93% | |
| Principal Financial Group Inc | 0.00% | 87,396 | $4,565,567 | $4,477,297 | -$88,270 | -1.93% | |
| Sei Investments Co | 0.00% | 81,624 | $4,263,994 | $4,181,598 | -$82,396 | -1.93% | |
| Panagora Asset Management Inc | 0.02% | 80,185 | $4,188,864 | $4,107,878 | -$80,986 | -1.93% | |
| Qube Research & Technologies Ltd | 0.01% | 78,741 | $4,113,430 | $4,033,901 | -$79,529 | -1.93% | |
| Gabelli Funds Llc | 0.03% | 71,500 | $3,735,160 | $3,662,945 | -$72,215 | -1.93% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 65,398 | $3,416,392 | $3,350,340 | -$66,052 | -1.93% | |
| Public Sector Pension Investment Board | 0.01% | 64,298 | $3,358,928 | $3,293,987 | -$64,941 | -1.93% | |
| Millennium Management Llc | 0.00% | 63,910 | $3,338,658 | $3,274,109 | -$64,549 | -1.93% | |
| Johnson Investment Counsel Inc | 0.03% | 63,003 | $3,291,277 | $3,227,644 | -$63,633 | -1.93% | |
| Rhumbline Advisers | 0.00% | 53,597 | $2,799,892 | $2,745,774 | -$54,118 | -1.93% | |
| State Of New Jersey Common Pension Fund D | 0.01% | 52,032 | $2,718,152 | $2,665,599 | -$52,553 | -1.93% | |
| Ameriprise Financial Inc | 0.00% | 49,983 | $2,611,120 | $2,560,629 | -$50,491 | -1.93% | |
| Brooklyn Investment Group | 0.08% | 49,231 | $2,571,828 | $2,522,104 | -$49,724 | -1.93% | |
| Great Lakes Advisors, Llc | 0.02% | 48,825 | $2,550,618 | $2,501,305 | -$49,313 | -1.93% | |
| American Century Companies Inc | 0.00% | 46,354 | $2,421,533 | $2,374,715 | -$46,818 | -1.93% | |
| Royal Bank Of Canada | 0.00% | 44,247 | $2,312,000 | $2,266,774 | -$45,226 | -1.96% | |
| Legal & General Group Plc | 0.00% | 43,378 | $2,266,067 | $2,222,255 | -$43,812 | -1.93% | |
| Wernau Asset Management Inc. | 2.35% | 43,327 | $2,263,432 | $2,219,642 | -$43,790 | -1.93% | |
| Exchange Traded Concepts, Llc | 0.02% | 41,866 | $2,187,080 | $2,144,795 | -$42,285 | -1.93% | |
| Quantinno Capital Management Lp | 0.00% | 41,347 | $2,159,974 | $2,118,207 | -$41,767 | -1.93% | |
| Deutsche Bank Ag\ | 0.00% | 41,003 | $2,141,996 | $2,100,584 | -$41,412 | -1.93% |
Frequently asked questions about UTL
Who owns the most UTL stock?
The largest holders of UTL are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for UNITIL CORP (UTL).
Is UTL widely held by superinvestors?
Many widely followed stocks like UTL appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly UTL is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.