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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
701
Teleflex
TFX
$5.76B
| $181K | ﹤0.01% |
+549
| New | +$181K |
|
|
PENG
702
Penguin Solutions, Inc. Ordinary Shares
PENG
$1.34B
| $181K | ﹤0.01% |
15,750
+1,802
| +13% | +$20.7K |
|
703
iShares MSCI Spain ETF
EWP
$1.4B
| $180K | ﹤0.01% |
6,256
-820
| -12% | -$23.6K |
|
704
Old Dominion Freight Line
ODFL
$30.7B
| $180K | ﹤0.01% |
+3,621
| New | +$180K |
|
705
Essent Group
ESNT
$6.24B
| $179K | ﹤0.01% |
3,830
-7,304
| -66% | -$341K |
|
706
Realty Income
O
$55B
| $179K | ﹤0.01% |
2,691
-2,113
| -44% | -$141K |
|
707
Parker-Hannifin
PH
$96.9B
| $179K | ﹤0.01% |
1,054
-925
| -47% | -$157K |
|
|
PBFX
708
DELISTED
PBF LOGISTICS LP
PBFX
| $179K | ﹤0.01% |
8,503
+938
| +12% | +$19.7K |
|
709
iShares Mortgage Real Estate ETF
REM
$614M
| $178K | ﹤0.01% |
4,237
+220
| +5% | +$9.24K |
|
|
PTE
710
DELISTED
PolarityTE, Inc. Common Stock
PTE
| $178K | ﹤0.01% |
1,251
+1,173
| +1,504% | +$167K |
|
711
Group 1 Automotive
GPI
$6.09B
| $174K | ﹤0.01% |
2,133
+438
| +26% | +$35.7K |
|
712
Moelis & Co
MC
$5.44B
| $173K | ﹤0.01% |
4,959
+3,959
| +396% | +$138K |
|
|
NTRP
713
DELISTED
Neurotrope, Inc. Common
NTRP
| $173K | ﹤0.01% |
21,684
+15,799
| +268% | +$126K |
|
714
Calumet Specialty Products
CLMT
$1.53B
| $172K | ﹤0.01% |
+41,204
| New | +$172K |
|
715
iShares MSCI South Africa ETF
EZA
$442M
| $172K | ﹤0.01% |
+3,153
| New | +$172K |
|
|
EMWP
716
DELISTED
Eros Media World PLC
EMWP
| $172K | ﹤0.01% |
6,391
+5,180
| +428% | +$139K |
|
|
PLAN
717
DELISTED
Anaplan, Inc.
PLAN
| $172K | ﹤0.01% |
+3,421
| New | +$172K |
|
|
DERM
718
DELISTED
Dermira, Inc.
DERM
| $172K | ﹤0.01% |
18,095
-65,348
| -78% | -$621K |
|
|
TPC
719
Tutor Perini Corporation
TPC
$3.29B
| $171K | ﹤0.01% |
+12,386
| New | +$171K |
|
720
Bloom Energy
BE
$15.7B
| $170K | ﹤0.01% |
13,915
-38,770
| -74% | -$474K |
|
721
Green Plains
GPRE
$635M
| $169K | ﹤0.01% |
15,707
-8,914
| -36% | -$95.9K |
|
722
Marker Therapeutics
MRKR
$11.8M
| $169K | ﹤0.01% |
2,143
+756
| +55% | +$59.6K |
|
723
Canadian Imperial Bank of Commerce
CM
$73.3B
| $168K | ﹤0.01% |
+4,292
| New | +$168K |
|
724
Liberty Latin America Class A
LILA
$1.51B
| $168K | ﹤0.01% |
+10,349
| New | +$168K |
|
|
LX
725
LexinFintech Holdings
LX
$988M
| $168K | ﹤0.01% |
15,074
-18,463
| -55% | -$206K |
|