Vanguard Group’s ClearSign Technologies CLIR Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2025
Q4
$736K Buy
132,298
+4,540
+4% +$36.1K ﹤0.01% 3851
2025
Q3
$985K Buy
127,758
+11,216
+10% +$65.8K ﹤0.01% 3790
2025
Q2
$623K Buy
116,542
+3,469
+3% +$20.9K ﹤0.01% 3871
2025
Q1
$848K Buy
113,073
+1,537
+1% +$15.3K ﹤0.01% 3764
2024
Q4
$1.61M Hold
111,536
﹤0.01% 3630
2024
Q3
$948K Hold
111,536
﹤0.01% 3790
2024
Q2
$931K Hold
111,536
﹤0.01% 3808
2024
Q1
$1.08M Buy
111,536
+1,420
+1% +$15.1K ﹤0.01% 3790
2023
Q4
$1.22M Buy
110,116
+2,634
+2% +$27.5K ﹤0.01% 3764
2023
Q3
$1.17M Buy
107,482
+709
+0.7% +$8.2K ﹤0.01% 3774
2023
Q2
$1.4M Hold
106,773
﹤0.01% 3792
2023
Q1
$852K Hold
106,773
﹤0.01% 3975
2022
Q4
$572K Sell
106,773
-279
-0.3% -$1.94K ﹤0.01% 4064
2022
Q3
$982K Sell
107,052
-386
-0.4% -$4.12K ﹤0.01% 4007
2022
Q2
$1.3M Sell
107,438
-230
-0.2% -$2.96K ﹤0.01% 3997
2022
Q1
$1.75M Hold
107,668
﹤0.01% 4009
2021
Q4
$1.49M Sell
107,668
-630
-0.6% -$10.4K ﹤0.01% 4142
2021
Q3
$2.17M Hold
108,298
﹤0.01% 4036
2021
Q2
$5.2M Buy
108,298
+677
+0.6% +$32K ﹤0.01% 3582
2021
Q1
$6.11M Buy
107,621
+25,739
+31% +$1.13M ﹤0.01% 3423
2020
Q4
$2.4M Buy
81,882
+11,520
+16% +$300K ﹤0.01% 3617
2020
Q3
$1.59M Buy
70,362
+11,186
+19% +$257K ﹤0.01% 3550
2020
Q2
$1.23M Sell
59,176
-585
-1% -$5.56K ﹤0.01% 3560
2020
Q1
$431K Sell
59,761
-10
-0% -$82 ﹤0.01% 3702
2019
Q4
$456K Hold
59,771
﹤0.01% 3815
2019
Q3
$717K Buy
59,771
+1,788
+3% +$22.2K ﹤0.01% 3733
2019
Q2
$667K Buy
57,983
+22,220
+62% +$204K ﹤0.01% 3775
2019
Q1
$321K Buy
35,763
+70
+0.2% +$768 ﹤0.01% 3839
2018
Q4
$364K Sell
35,693
-43,739
-55% -$624K ﹤0.01% 3793
2018
Q3
$1.27M Buy
79,432
+6,483
+9% +$126K ﹤0.01% 3660
2018
Q2
$1.46M Buy
72,949
+6,311
+9% +$123K ﹤0.01% 3585
2018
Q1
$1.35M Buy
66,638
+4,888
+8% +$119K ﹤0.01% 3572
2017
Q4
$2.22M Buy
61,750
+26,994
+78% +$881K ﹤0.01% 3390
2017
Q3
$1.23M Buy
34,756
+1,065
+3% +$35.4K ﹤0.01% 3537
2017
Q2
$1.28M Buy
33,691
+719
+2% +$26.4K ﹤0.01% 3516
2017
Q1
$1.29M Buy
32,972
+1,046
+3% +$37.8K ﹤0.01% 3519
2016
Q4
$1.09M Sell
31,926
-2,851
-8% -$132K ﹤0.01% 3530
2016
Q3
$2.09M Buy
34,777
+1,217
+4% +$60.5K ﹤0.01% 3379
2016
Q2
$1.68M Buy
33,560
+573
+2% +$25.2K ﹤0.01% 3432
2016
Q1
$1.32M Buy
32,987
+972
+3% +$35.9K ﹤0.01% 3517
2015
Q4
$1.55M Buy
32,015
+830
+3% +$44K ﹤0.01% 3491
2015
Q3
$1.93M Buy
31,185
+988
+3% +$49.7K ﹤0.01% 3394
2015
Q2
$1.63M Buy
30,197
+1,267
+4% +$68.2K ﹤0.01% 3496
2015
Q1
$1.53M Buy
28,930
+7,230
+33% +$450K ﹤0.01% 3504
2014
Q4
$1.59M Buy
21,700
+320
+1% +$21.5K ﹤0.01% 3363
2014
Q3
$1.43M Buy
21,380
+907
+4% +$69.5K ﹤0.01% 3397
2014
Q2
$1.88M Buy
20,473
+375
+2% +$34.8K ﹤0.01% 3282
2014
Q1
$2.19M Buy
20,098
+4,927
+32% +$504K ﹤0.01% 3180
2013
Q4
$1.74M Buy
15,171
+1,650
+12% +$126K ﹤0.01% 3243
2013
Q3
$940K Buy
13,521
+403
+3% +$33.6K ﹤0.01% 3387
2013
Q2
$1.14M Buy
+13,118
New +$1.1M ﹤0.01% 3267

Other funds holding CLIR

Vanguard Group's CLIR Position: Q4 2025 in Review

Vanguard Group increased its ClearSign Technologies (CLIR) stake by 3.6% in Q4 2025, buying an estimated $36.1K and bringing the position to 132,298 shares worth $736K. The position accounts for ﹤0.01% of the portfolio, ranked #3851.

Vanguard Group first reported a position in CLIR in Q2 2013 and has held it in 51 quarters since. The position peaked at $6.11M in Q1 2021. 37 funds tracked by Wall St. Rank hold CLIR as of Q4 2025.

  • Vanguard Group held 132,298 shares of ClearSign Technologies worth $736K as of Q4 2025.
  • Vanguard Group bought 4,540 ClearSign Technologies shares in Q4 2025, an estimated $36.1K.
  • ClearSign Technologies made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #3851 holding.
  • Vanguard Group first reported a position in ClearSign Technologies in Q2 2013 and has held it in 51 quarters since.
  • Vanguard Group's ClearSign Technologies position peaked at $6.11M in Q1 2021.
  • 37 funds tracked by Wall St. Rank held ClearSign Technologies as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.