Security key
366651107
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 12,384,484
- Total 13F value
- $1,609,067,825
- Share change
- -3,477,196
- Put/Call ratio
- 84%
- SEC-reported price per share
- $129.62
- Number of holders
- 303
- Value change
- -$458,338,789
- Number of buys
- 110
- Number of sells
- 227
- Shares outstanding
- 66,592,787
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
303
Top holders
10
IT full security history
Ownership snapshot
Full 13F holder table
GARTNER INC SEC filings
GARTNER INC company facts
Broader feeds
Ownership snapshot
Top reported holders of IT - GARTNER INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BAMCO INC /NY/
Disclosed value leader
BAMCO INC /NY/
Comparable rows
15/15
Latest evidence
31 May 2026
13D/G
13F
Lead comparable stake: 11%
13D/G row: BAMCO INC /NY/
Showing 1-6 of 15 holder rows.
Quick read
BAMCO INC /NY/ leads the comparable SEC ownership view at 11%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BAMCO INC /NY/'s linked filing trail.
Comparable ownership
Top 5
BAMCO INC /NY/
11%
BlackRock, Inc.
7.5%
VANGUARD CAPITAL MANAGEMENT LLC
7.3%
Independent Franchise Partners LLP
6.5%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BAMCO INC /NY/ |
13D/G
13F
Baron Capital Group, Inc. · Company
|
11%
|
$1,116,437,970
7,558,310 shares
|
+$242,346,911 | 31 May 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
7.5%
from 13D/G
|
$1,090,092,046
6,884,501 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.3%
|
$817,526,996
5,163,111 shares
|
$0 | 31 Mar 2026 |
| Independent Franchise Partners LLP |
13F
13D/G
Company
|
6.5%
from 13D/G
|
$728,486,080
4,600,771 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.3%
|
$587,814,132
3,712,354 shares
|
$0 | 31 Mar 2026 |
| AQR CAPITAL MANAGEMENT LLC |
13F
13D/G
Company
|
5.1%
from 13D/G
|
$564,840,405
3,567,263 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
303
Shares
12,384,484
Rows available
303
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
711
Q2 2026 holders
303
Holder diff
-408
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|