Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
iShares Latin America 40 ETF
ILF
$1.79B
| $152K | ﹤0.01% |
+7,059
| New | +$152K |
|
|
AXNX
852
DELISTED
Axonics, Inc. Common Stock
AXNX
| $152K | ﹤0.01% |
4,347
+3,907
| +888% | +$137K |
|
853
Colgate-Palmolive
CL
$67.2B
| $151K | ﹤0.01% |
+2,068
| New | +$151K |
|
|
SOHU
854
Sohu.com
SOHU
$474M
| $151K | ﹤0.01% |
16,405
+2,070
| +14% | +$19.1K |
|
855
Littelfuse
LFUS
$6.54B
| $150K | ﹤0.01% |
881
-300
| -25% | -$51.1K |
|
856
Suncor Energy
SU
$51.3B
| $150K | ﹤0.01% |
+8,903
| New | +$150K |
|
857
Vanguard FTSE Pacific ETF
VPL
$7.92B
| $150K | ﹤0.01% |
2,368
+1,748
| +282% | +$111K |
|
858
Evercore
EVR
$12.8B
| $149K | ﹤0.01% |
2,532
-4,937
| -66% | -$291K |
|
859
Avnet
AVT
$4.5B
| $148K | ﹤0.01% |
5,342
-2,528
| -32% | -$70K |
|
860
Global X Robotics & Artificial Intelligence ETF
BOTZ
$2.86B
| $148K | ﹤0.01% |
6,225
+5,503
| +762% | +$131K |
|
861
Iridium Communications
IRDM
$1.91B
| $148K | ﹤0.01% |
5,822
-1,638
| -22% | -$41.6K |
|
862
iShares MSCI USA Momentum Factor ETF
MTUM
$18.9B
| $148K | ﹤0.01% |
+1,131
| New | +$148K |
|
|
TXNM
863
TXNM Energy, Inc.
TXNM
$5.99B
| $148K | ﹤0.01% |
+3,854
| New | +$148K |
|
|
YELL
864
DELISTED
Yellow Corporation Common Stock
YELL
| $148K | ﹤0.01% |
+80,177
| New | +$148K |
|
865
Apellis Pharmaceuticals
APLS
$3.29B
| $147K | ﹤0.01% |
4,525
-1,429
| -24% | -$46.4K |
|
|
EVRI
866
DELISTED
Everi Holdings
EVRI
| $147K | ﹤0.01% |
28,574
+23,635
| +479% | +$122K |
|
|
TPC
867
Tutor Perini Corporation
TPC
$3.29B
| $147K | ﹤0.01% |
12,071
+3,048
| +34% | +$37.1K |
|
868
Great Lakes Dredge & Dock
GLDD
$815M
| $146K | ﹤0.01% |
15,845
-25,948
| -62% | -$239K |
|
869
PTC
PTC
$24.5B
| $146K | ﹤0.01% |
1,881
-6,859
| -78% | -$532K |
|
870
Euronet Worldwide
EEFT
$3.57B
| $145K | ﹤0.01% |
+1,523
| New | +$145K |
|
871
Huntington Ingalls Industries
HII
$10.7B
| $145K | ﹤0.01% |
+833
| New | +$145K |
|
872
PRA Group
PRAA
$653M
| $145K | ﹤0.01% |
3,756
+2,755
| +275% | +$106K |
|
|
NBLX
873
DELISTED
Noble Midstream Partners LP
NBLX
| $145K | ﹤0.01% |
17,156
+4,041
| +31% | +$34.2K |
|
874
AppFolio
APPF
$9.92B
| $144K | ﹤0.01% |
+889
| New | +$144K |
|
875
Century Aluminum
CENX
$2.09B
| $144K | ﹤0.01% |
20,250
+12,278
| +154% | +$87.3K |
|