Teacher Retirement System of Texas
MASI

Teacher Retirement System of Texas’s Masimo MASI Stock Holding History

Teacher Retirement System of Texas’s Portfolio MASI Stock Details MASI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.05M Buy
+5,921
New +$929K ﹤0.01% 792
2025
Q4 		– Sell
-6,033
Closed -$890K – 1848
2025
Q3 		$890K Sell
6,033
-5,638
-48% -$854K ﹤0.01% 1277
2025
Q2 		$1.96M Sell
11,671
-1,592
-12% -$254K 0.01% 899
2025
Q1 		$2.21M Sell
13,263
-3,671
-22% -$637K 0.01% 822
2024
Q4 		$2.8M Sell
16,934
-501
-3% -$79.1K 0.01% 707
2024
Q3 		$2.33M Buy
17,435
+13,784
+378% +$1.6M 0.01% 693
2024
Q2 		$460K Buy
3,651
+1,753
+92% +$231K ﹤0.01% 1230
2024
Q1 		$279K Sell
1,898
-524
-22% -$67.7K ﹤0.01% 1483
2023
Q4 		$284K Sell
2,422
-1,035
-30% -$96.5K ﹤0.01% 1575
2023
Q3 		$303K Buy
3,457
+76
+2% +$8.85K ﹤0.01% 1588
2023
Q2 		$556K Sell
3,381
-37,521
-92% -$6.53M ﹤0.01% 1386
2023
Q1 		$7.55M Buy
40,902
+2,487
+6% +$420K 0.05% 366
2022
Q4 		$5.68M Buy
38,415
+30,886
+410% +$4.25M 0.04% 398
2022
Q3 		$1.06M Sell
7,529
-514
-6% -$75.1K 0.01% 1113
2022
Q2 		$1.05M Sell
8,043
-2,751
-25% -$368K 0.01% 774
2022
Q1 		$1.57M Sell
10,794
-167
-2% -$32.1K 0.01% 798
2021
Q4 		$3.21M Buy
10,961
+2,500
+30% +$712K 0.01% 614
2021
Q3 		$2.29M Buy
8,461
+1,662
+24% +$451K 0.01% 673
2021
Q2 		$1.65M Sell
6,799
-27,425
-80% -$6.26M 0.01% 739
2021
Q1 		$7.86M Buy
34,224
+3,487
+11% +$876K 0.04% 399
2020
Q4 		$8.25M Sell
30,737
-2,839
-8% -$708K 0.05% 362
2020
Q3 		$7.93M Buy
33,576
+31,902
+1,906% +$7.15M 0.05% 347
2020
Q2 		$382K Buy
+1,674
New +$367K ﹤0.01% 694
2018
Q4 		– Sell
-5,792
Closed -$721K – 973
2018
Q3 		$721K Sell
5,792
-4,164
-42% -$462K 0.01% 720
2018
Q2 		$972K Sell
9,956
-898
-8% -$85.4K 0.01% 819
2018
Q1 		$955K Sell
10,854
-5,972
-35% -$521K 0.01% 848
2017
Q4 		$1.43M Buy
16,826
+12,817
+320% +$1.11M 0.01% 877
2017
Q3 		$347K Buy
4,009
+207
+5% +$18.3K ﹤0.01% 773
2017
Q2 		$347K Buy
3,802
+126
+3% +$11.6K ﹤0.01% 660
2017
Q1 		$343K Sell
3,676
-79
-2% -$6.5K ﹤0.01% 669
2016
Q4 		$253K Sell
3,755
-1,290
-26% -$79.3K ﹤0.01% 813
2016
Q3 		$300K Sell
5,045
-1,639
-25% -$92.5K ﹤0.01% 1023
2016
Q2 		$351K Buy
6,684
+805
+14% +$37.9K ﹤0.01% 1076
2016
Q1 		$246K Buy
5,879
+1,376
+31% +$51.8K ﹤0.01% 1193
2015
Q4 		$187K Sell
4,503
-1,583
-26% -$64.7K ﹤0.01% 1169
2015
Q3 		$235K Buy
6,086
+4,140
+213% +$169K ﹤0.01% 1213
2015
Q2 		$75K Buy
1,946
+437
+29% +$15.7K ﹤0.01% 1304
2015
Q1 		$50K Sell
1,509
-67
-4% -$1.93K ﹤0.01% 1455
2014
Q4 		$42K Sell
1,576
-418
-21% -$10.3K ﹤0.01% 1462
2014
Q3 		$42K Hold
1,994
– – ﹤0.01% 1396
2014
Q2 		$47K Hold
1,994
– – ﹤0.01% 1444
2014
Q1 		$54K Sell
1,994
-9
-0.4% -$257 ﹤0.01% 1142
2013
Q4 		$59K Sell
2,003
-4,978
-71% -$139K ﹤0.01% 1105
2013
Q3 		$186K Buy
6,981
+3,269
+88% +$80.6K ﹤0.01% 1235
2013
Q2 		$79K Buy
+3,712
New +$78.1K ﹤0.01% 1363

Other funds holding MASI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
PCM
Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return
PCM
Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Teacher Retirement System of Texas's MASI Position: Q1 2026 in Review

Teacher Retirement System of Texas opened a new position in Masimo (MASI) in Q1 2026: 5,921 shares worth $1.05M. The stake represents ﹤0.01% of the portfolio and ranks #792 among its holdings. This is a return to the name: Teacher Retirement System of Texas previously reported a position in MASI as recently as Q3 2025.

Teacher Retirement System of Texas first reported a position in MASI in Q2 2013 and has held it in 45 quarters since. The position peaked at $8.25M in Q4 2020. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Teacher Retirement System of Texas held 5,921 shares of Masimo worth $1.05M as of Q1 2026.
  • Masimo was a new Teacher Retirement System of Texas position in Q1 2026.
  • Masimo made up ﹤0.01% of Teacher Retirement System of Texas's portfolio in Q1 2026, its #792 holding.
  • Teacher Retirement System of Texas first reported a position in Masimo in Q2 2013 and has held it in 45 quarters since.
  • Teacher Retirement System of Texas's Masimo position peaked at $8.25M in Q4 2020.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Teacher Retirement System of Texas's 13F filing for Q1 2026, filed 30 Apr 2026.