Vanguard Group’s Quantum Corp QMCO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | $4.03M | Buy |
625,538
+321,941
| +106% | +$2.89M | ﹤0.01% | 3334 |
|
|
2025
Q3 | $3.01M | Buy |
303,597
+46,919
| +18% | +$394K | ﹤0.01% | 3438 |
|
|
2025
Q2 | $2.56M | Buy |
256,678
+2,232
| +0.9% | +$24.7K | ﹤0.01% | 3448 |
|
|
2025
Q1 | $3.66M | Buy |
254,446
+12,262
| +5% | +$267K | ﹤0.01% | 3284 |
|
|
2024
Q4 | $13.1M | Sell |
242,184
-3,711
| -2% | -$53.8K | ﹤0.01% | 2805 |
|
|
2024
Q3 | $861K | Sell |
245,895
-4,908
| -2% | -$27.7K | ﹤0.01% | 3818 |
|
|
2024
Q2 | $2.05M | Hold |
250,803
| – | – | ﹤0.01% | 3547 |
|
|
2024
Q1 | $2.99M | Sell |
250,803
-141
| -0.1% | -$1.26K | ﹤0.01% | 3464 |
|
|
2023
Q4 | $1.75M | Hold |
250,944
| – | – | ﹤0.01% | 3646 |
|
|
2023
Q3 | $3.06M | Hold |
250,944
| – | – | ﹤0.01% | 3447 |
|
|
2023
Q2 | $5.42M | Sell |
250,944
-964
| -0.4% | -$19.9K | ﹤0.01% | 3260 |
|
|
2023
Q1 | $5.79M | Buy |
251,908
+13,026
| +5% | +$340K | ﹤0.01% | 3231 |
|
|
2022
Q4 | $5.21M | Buy |
238,882
+40,940
| +21% | +$1.01M | ﹤0.01% | 3287 |
|
|
2022
Q3 | $4.28M | Buy |
197,942
+57,407
| +41% | +$1.84M | ﹤0.01% | 3407 |
|
|
2022
Q2 | $3.99M | Buy |
140,535
+2,834
| +2% | +$107K | ﹤0.01% | 3495 |
|
|
2022
Q1 | $6.25M | Buy |
137,701
+9,121
| +7% | +$668K | ﹤0.01% | 3414 |
|
|
2021
Q4 | $14.2M | Sell |
128,580
-6,851
| -5% | -$781K | ﹤0.01% | 3030 |
|
|
2021
Q3 | $14M | Buy |
135,431
+1,535
| +1% | +$181K | ﹤0.01% | 3056 |
|
|
2021
Q2 | $18.5M | Buy |
133,896
+14,084
| +12% | +$2.28M | ﹤0.01% | 2889 |
|
|
2021
Q1 | $20M | Buy |
119,812
+36,838
| +44% | +$5.87M | ﹤0.01% | 2784 |
|
|
2020
Q4 | $10.2M | Buy |
82,974
+11,138
| +16% | +$1.18M | ﹤0.01% | 2985 |
|
|
2020
Q3 | $6.61M | Buy |
71,836
+1,859
| +3% | +$181K | ﹤0.01% | 3008 |
|
|
2020
Q2 | $5.4M | Buy |
+69,977
| New | +$5.54M | ﹤0.01% | 3062 |
|
|
2019
Q1 | – | Sell |
-25,857
| Closed | -$1.03M | – | 4125 |
|
|
2018
Q4 | $1.03M | Sell |
25,857
-49,791
| -66% | -$2.29M | ﹤0.01% | 3556 |
|
|
2018
Q3 | $3.63M | Buy |
75,648
+125
| +0.2% | +$5.1K | ﹤0.01% | 3339 |
|
|
2018
Q2 | $3.32M | Buy |
75,523
+7,921
| +12% | +$531K | ﹤0.01% | 3348 |
|
|
2018
Q1 | $4.92M | Buy |
67,602
+7,736
| +13% | +$753K | ﹤0.01% | 3162 |
|
|
2017
Q4 | $6.74M | Buy |
59,866
+352
| +0.6% | +$37.9K | ﹤0.01% | 3010 |
|
|
2017
Q3 | $7.28M | Sell |
59,514
-2,455
| -4% | -$329K | ﹤0.01% | 2962 |
|
|
2017
Q2 | $9.68M | Buy |
61,969
+3,638
| +6% | +$565K | ﹤0.01% | 2790 |
|
|
2017
Q1 | $8.12M | Buy |
58,331
+2,399
| +4% | +$345K | ﹤0.01% | 2848 |
|
|
2016
Q4 | $7.45M | Buy |
55,932
+1,858
| +3% | +$243K | ﹤0.01% | 2871 |
|
|
2016
Q3 | $6.37M | Buy |
54,074
+1,059
| +2% | +$103K | ﹤0.01% | 2887 |
|
|
2016
Q2 | $3.56M | Buy |
53,015
+418
| +0.8% | +$30.3K | ﹤0.01% | 3129 |
|
|
2016
Q1 | $5.13M | Sell |
52,597
-27,513
| -34% | -$2.65M | ﹤0.01% | 2947 |
|
|
2015
Q4 | $11.9M | Sell |
80,110
-22,048
| -22% | -$3.02M | ﹤0.01% | 2542 |
|
|
2015
Q3 | $11.4M | Sell |
102,158
-17,613
| -15% | -$3.26M | ﹤0.01% | 2546 |
|
|
2015
Q2 | $32.2M | Buy |
119,771
+8,771
| +8% | +$2.68M | ﹤0.01% | 2147 |
|
|
2015
Q1 | $28.4M | Buy |
111,000
+14,525
| +15% | +$3.83M | ﹤0.01% | 2178 |
|
|
2014
Q4 | $27.2M | Buy |
96,475
+5,703
| +6% | +$1.31M | ﹤0.01% | 2123 |
|
|
2014
Q3 | $16.8M | Buy |
90,772
+1,820
| +2% | +$362K | ﹤0.01% | 2268 |
|
|
2014
Q2 | $17.4M | Buy |
88,952
+301
| +0.3% | +$55K | ﹤0.01% | 2268 |
|
|
2014
Q1 | $17.3M | Buy |
88,651
+6,038
| +7% | +$1.18M | ﹤0.01% | 2243 |
|
|
2013
Q4 | $15.9M | Buy |
82,613
+2,879
| +4% | +$589K | ﹤0.01% | 2253 |
|
|
2013
Q3 | $17.6M | Buy |
79,734
+3,059
| +4% | +$748K | ﹤0.01% | 2157 |
|
|
2013
Q2 | $16.8M | Buy |
+76,675
| New | +$17.1M | ﹤0.01% | 2127 |
|
Other funds holding QMCO
PCM
A
FHA
Vanguard Group's QMCO Position: Q4 2025 in Review
Vanguard Group increased its Quantum Corp (QMCO) stake by 106% in Q4 2025, buying an estimated $2.89M and bringing the position to 625,538 shares worth $4.03M. The position accounts for ﹤0.01% of the portfolio, ranked #3334.
Vanguard Group first reported a position in QMCO in Q2 2013 and has held it in 46 quarters since. The position peaked at $32.2M in Q2 2015. 40 funds tracked by Wall St. Rank hold QMCO as of Q4 2025.
- Vanguard Group held 625,538 shares of Quantum Corp worth $4.03M as of Q4 2025.
- Vanguard Group bought 321,941 Quantum Corp shares in Q4 2025, an estimated $2.89M.
- Quantum Corp made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #3334 holding.
- Vanguard Group first reported a position in Quantum Corp in Q2 2013 and has held it in 46 quarters since.
- Vanguard Group's Quantum Corp position peaked at $32.2M in Q2 2015.
- 40 funds tracked by Wall St. Rank held Quantum Corp as of Q4 2025.
Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.