CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
PensionPosition in MGNI — Magnite, Inc.
CIK 1081019
WEST SACRAMENTO, CA
Position in MGNI
as of Mar 31, 2026
· filed May 18, 2026
Position Value
$2,097,152
-$118,632 QoQ
Shares Held
176,528
+29.3% QoQ
Ownership
0.123%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
23 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in MGNI Over Time
Shares Held
Position Value (USD)
Position in Advertising Agencies
Communication Services · as of Mar 31, 2026CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $201,788,194 across 12 Advertising Agencies names. MGNI ranks #4 (1.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | APP |
AppLovin Corp
|
349,227 | $138,992,346 | |
| 2 | OMC |
Omnicom Group Inc.
|
532,308 | $40,088,115 | |
| 3 | TTD |
Trade Desk, Inc.
|
668,065 | $15,158,394 | |
| 4 | MGNI |
Magnite, Inc.
This page
|
176,528 | $2,097,152 | |
| 5 | ZD |
Ziff Davis, Inc.
|
46,368 | $1,945,601 | |
| 6 | DV |
DoubleVerify Holdings, Inc.
|
179,209 | $1,702,485 | |
| 7 | STGW |
Stagwell Inc
|
106,762 | $671,532 | |
| 8 | QNST |
Quinstreet, Inc
|
48,789 | $585,955 |
All Filings in MGNI
Export CSV
23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $2,097,152 | 176,528 | Shares | Sole | 2026-05-18 | |
| 2025-12-31 | $2,215,784 | 136,524 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $2,887,614 | 132,581 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $3,197,709 | 132,575 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $1,483,996 | 130,061 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $1,889,290 | 118,674 | Shares | Sole | 2025-03-18 | |
| 2024-09-30 | $1,651,113 | 119,214 | Shares | Sole | 2025-04-04 | |
| 2024-06-30 | $1,632,450 | 122,833 | Shares | Sole | 2025-04-08 | |
| 2024-03-31 | $1,345,760 | 125,187 | Shares | Sole | 2024-05-16 | |
| 2023-12-31 | $1,176,587 | 125,973 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $990,612 | 131,381 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $2,230,450 | 163,403 | Shares | Sole | 2023-08-21 | |
| 2023-03-31 | $1,432,216 | 154,667 | Shares | Sole | 2023-05-09 | |
| 2022-12-31 | $1,661,136 | 156,859 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $1,010,774 | 153,847 | Shares | Sole | 2022-11-21 | |
| 2022-06-30 | $1,403,608 | 158,064 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $2,143,837 | 162,289 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $3,088,330 | 176,476 | Shares | Sole | 2022-02-15 | |
| 2021-09-30 | $4,769,772 | 170,349 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $4,897,663 | 144,730 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $6,937,427 | 166,725 | Shares | Sole | 2021-05-18 | |
| 2020-12-31 | $4,995,749 | 162,675 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $1,114,008 | 160,289 | Shares | Sole | 2020-11-17 | |
| No filing history on record for this holder in this stock. | ||||||