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 |
Amazon
AMZN
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
676
Navient
NAVI
$1.29B
| $178K | 0.01% |
10,718
-17,867
| -63% | -$297K |
|
|
PAY
677
DELISTED
Verifone Systems Inc
PAY
| $178K | 0.01% |
9,864
-4,166
| -30% | -$75.2K |
|
|
DO
678
DELISTED
Diamond Offshore Drilling
DO
| $178K | 0.01% |
+16,479
| New | +$178K |
|
679
Kratos Defense & Security Solutions
KTOS
$11.1B
| $177K | 0.01% |
14,919
-10,015
| -40% | -$119K |
|
680
Teucrium Wheat Fund
WEAT
$116M
| $177K | 0.01% |
22,696
+18,835
| +488% | +$147K |
|
|
AIV
681
Aimco
AIV
$1.07B
| $176K | 0.01% |
+30,898
| New | +$176K |
|
682
Enpro
NPO
$4.61B
| $176K | 0.01% |
2,470
-2,375
| -49% | -$169K |
|
683
NETGEAR
NTGR
$823M
| $176K | 0.01% |
4,089
-2,406
| -37% | -$104K |
|
684
Tesla
TSLA
$1.12T
| $176K | 0.01% |
7,335
-17,415
| -70% | -$418K |
|
685
V2X
VVX
$1.73B
| $176K | 0.01% |
5,450
+3,894
| +250% | +$126K |
|
|
MTL
686
DELISTED
Mechel PAO American Depository Shares, each representing two ordinary shares (ADSs)
MTL
| $176K | 0.01% |
+38,024
| New | +$176K |
|
687
Comstock Resources
CRK
$4.65B
| $175K | 0.01% |
24,860
-29,224
| -54% | -$206K |
|
688
Global X Lithium & Battery Tech ETF
LIT
$1.12B
| $175K | 0.01% |
6,037
+2,164
| +56% | +$62.7K |
|
|
CHK
689
DELISTED
Chesapeake Energy Corporation
CHK
| $175K | 0.01% |
176
-54
| -23% | -$53.7K |
|
|
BEL
690
DELISTED
Belmond Ltd.
BEL
| $174K | 0.01% |
13,088
+1,298
| +11% | +$17.3K |
|
691
Pegasystems
PEGA
$9.66B
| $173K | 0.01% |
5,960
-4,120
| -41% | -$120K |
|
692
Atlassian
TEAM
$45.7B
| $171K | 0.01% |
4,884
-796
| -14% | -$27.9K |
|
693
Monolithic Power Systems
MPWR
$41B
| $170K | 0.01% |
+1,764
| New | +$170K |
|
694
AMC Networks
AMCX
$328M
| $169K | 0.01% |
+3,169
| New | +$169K |
|
695
Gold Fields
GFI
$33.1B
| $169K | 0.01% |
+48,613
| New | +$169K |
|
|
IMGN
696
DELISTED
Immunogen Inc
IMGN
| $169K | 0.01% |
23,897
+23,425
| +4,963% | +$166K |
|
|
SNP
697
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $169K | 0.01% |
+2,152
| New | +$169K |
|
|
BIVV
698
DELISTED
Bioverativ Inc. Common Stock
BIVV
| $169K | 0.01% |
+2,825
| New | +$169K |
|
699
Cross Country Healthcare
CCRN
$455M
| $168K | 0.01% |
13,032
+6,051
| +87% | +$78K |
|
700
Comfort Systems
FIX
$26.5B
| $168K | 0.01% |
4,552
-2,223
| -33% | -$82K |
|