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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
+$23.3M |
| 3 |
Pinduoduo
PDD
|
+$17.3M |
| 4 |
Pfizer
PFE
|
+$16.8M |
| 5 |
American Airlines Group
AAL
|
+$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
+$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$38.1M |
| 3 |
AutoZone
AZO
|
+$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$25.3M |
| 5 |
Apple
AAPL
|
+$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
NGD
1526
New Gold Inc
NGD
$5.11B
| $78K | ﹤0.01% |
50,755
-41,686
| -45% | -$64.1K |
|
1527
Nelnet
NNI
$4.53B
| $78K | ﹤0.01% |
1,084
-226
| -17% | -$16.3K |
|
1528
Progress Software
PRGS
$1.81B
| $78K | ﹤0.01% |
1,790
-4,404
| -71% | -$192K |
|
1529
Primoris Services
PRIM
$6.59B
| $78K | ﹤0.01% |
2,371
+2,184
| +1,168% | +$71.8K |
|
|
1530
AutoZone
AZO
$70.8B
| $77K | ﹤0.01% |
55
-23,001
| -100% | -$32.2M |
|
1531
BJs Wholesale Club
BJ
$13.1B
| $77K | ﹤0.01% |
1,738
+1,056
| +155% | +$46.8K |
|
1532
Commault Systems
CVLT
$8.42B
| $77K | ﹤0.01% |
1,207
-4,077
| -77% | -$260K |
|
1533
Geospace Technologies
GEOS
$236M
| $77K | ﹤0.01% |
8,506
+1,629
| +24% | +$14.7K |
|
1534
Immunic
IMUX
$81.9M
| $77K | ﹤0.01% |
+4,834
| New | +$77K |
|
1535
iShares MSCI EAFE ETF
EFA
$67.1B
| $76K | ﹤0.01% |
1,014
-41,649
| -98% | -$3.12M |
|
1536
Kura Oncology
KURA
$702M
| $76K | ﹤0.01% |
2,698
-15,048
| -85% | -$424K |
|
1537
Red Rock Resorts
RRR
$3.61B
| $76K | ﹤0.01% |
+2,339
| New | +$76K |
|
1538
Riverview Bancorp
RVSB
$107M
| $76K | ﹤0.01% |
11,088
+9,351
| +538% | +$64.1K |
|
1539
Steelcase
SCS
$1.92B
| $76K | ﹤0.01% |
5,312
-4
| -0.1% | -$57 |
|
1540
WNS Holdings
WNS
$3.27B
| $76K | ﹤0.01% |
1,057
+957
| +957% | +$68.8K |
|
1541
East-West Bancorp
EWBC
$14.8B
| $75K | ﹤0.01% |
1,028
+846
| +465% | +$61.7K |
|
1542
Pinnacle West Capital
PNW
$10.3B
| $75K | ﹤0.01% |
923
-144
| -13% | -$11.7K |
|
1543
Vipshop
VIPS
$9.31B
| $75K | ﹤0.01% |
2,523
-13,731
| -84% | -$408K |
|
1544
Vanguard Mid-Cap ETF
VO
$87.8B
| $75K | ﹤0.01% |
+343
| New | +$75K |
|
1545
First Industrial Realty Trust
FR
$6.85B
| $74K | ﹤0.01% |
1,637
+1,421
| +658% | +$64.2K |
|
1546
Qualigen Therapeutics
QLGN
$3.83M
| $74K | ﹤0.01% |
55
+53
| +2,650% | +$71.3K |
|
|
CSPR
1547
DELISTED
Casper Sleep Inc.
CSPR
| $74K | ﹤0.01% |
+10,348
| New | +$74K |
|
|
WPG
1548
DELISTED
Washington Prime Group Inc.
WPG
| $74K | ﹤0.01% |
33,515
+33,315
| +16,658% | +$73.6K |
|
1549
Alector
ALEC
$299M
| $72K | ﹤0.01% |
3,624
+464
| +15% | +$9.22K |
|
1550
iBio
IBIO
$16.6M
| $72K | ﹤0.01% |
95
-4
| -4% | -$3.03K |
|