Calamos Advisors
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Calamos Advisors’s MongoDB MDB Stock Holding History

Calamos Advisors’s Portfolio MDB Stock Details MDB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$16.3M Buy
48,594
+18,131
+60% +$5.44M 0.05% 324
2026
Q1 		$7.46M Sell
30,463
-19,396
-39% -$6.49M 0.03% 471
2025
Q4 		$20.9M Buy
49,859
+3,503
+8% +$1.27M 0.08% 258
2025
Q3 		$14.4M Sell
46,356
-95
-0.2% -$24.4K 0.05% 340
2025
Q2 		$9.75M Buy
+46,451
New +$8.59M 0.04% 412
2025
Q1 		– Sell
-35,133
Closed -$8.18M – 952
2024
Q4 		$8.18M Sell
35,133
-384
-1% -$108K 0.03% 436
2024
Q3 		$9.6M Sell
35,517
-1,731
-5% -$450K 0.04% 420
2024
Q2 		$9.31M Buy
37,248
+33,856
+998% +$10.7M 0.04% 415
2024
Q1 		$1.22M Sell
3,392
-9,737
-74% -$3.98M 0.01% 626
2023
Q4 		$5.37M Buy
13,129
+10,448
+390% +$3.96M 0.03% 511
2023
Q3 		$927K Hold
2,681
– – ﹤0.01% 677
2023
Q2 		$1.1M Buy
+2,681
New +$782K 0.01% 697
2022
Q4 		– Sell
-1,693
Closed -$336K – 1289
2022
Q3 		$336K Sell
1,693
-3,108
-65% -$907K ﹤0.01% 1034
2022
Q2 		$1.25M Buy
4,801
+686
+17% +$214K 0.01% 968
2022
Q1 		$1.82M Sell
4,115
-2,382
-37% -$931K 0.01% 931
2021
Q4 		$3.44M Sell
6,497
-700
-10% -$358K 0.01% 797
2021
Q3 		$3.39M Buy
7,197
+1,450
+25% +$584K 0.01% 694
2021
Q2 		$2.08M Buy
5,747
+1,743
+44% +$539K 0.01% 719
2021
Q1 		$1.07M Sell
4,004
-4,468
-53% -$1.58M 0.01% 761
2020
Q4 		$3.04M Buy
8,472
+3,565
+73% +$996K 0.02% 574
2020
Q3 		$1.14M Sell
4,907
-2,478
-34% -$537K 0.01% 642
2020
Q2 		$1.67M Buy
+7,385
New +$1.37M 0.01% 596

Other funds holding MDB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
HIIFS
Harel Insurance Investments & Financial Services Ramat Gan, Israel $20.6B AUM 59.59% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
ECSS
Eurizon Capital SGR SpA Milan $37.3B AUM
AIM
Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return

Calamos Advisors's MDB Position: Q2 2026 in Review

Calamos Advisors increased its MongoDB (MDB) stake by 60% in Q2 2026, buying an estimated $5.44M and bringing the position to 48,594 shares worth $16.3M. The position accounts for 0.05% of the portfolio, ranked #324.

Calamos Advisors first reported a position in MDB in Q2 2020 and has held it in 22 quarters since. The position peaked at $20.9M in Q4 2025. 399 funds tracked by Wall St. Rank hold MDB as of Q2 2026.

  • Calamos Advisors held 48,594 shares of MongoDB worth $16.3M as of Q2 2026.
  • Calamos Advisors bought 18,131 MongoDB shares in Q2 2026, an estimated $5.44M.
  • MongoDB made up 0.05% of Calamos Advisors's portfolio in Q2 2026, its #324 holding.
  • Calamos Advisors first reported a position in MongoDB in Q2 2020 and has held it in 22 quarters since.
  • Calamos Advisors's MongoDB position peaked at $20.9M in Q4 2025.
  • 399 funds tracked by Wall St. Rank held MongoDB as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.