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 |
Apple
AAPL
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Collegium Pharmaceutical
COLL
$1.19B
| $419K | ﹤0.01% |
+17,483
| New | +$419K |
|
577
EPAM Systems
EPAM
$9.16B
| $418K | ﹤0.01% |
+1,398
| New | +$418K |
|
578
iShares US Regional Banks ETF
IAT
$650M
| $418K | ﹤0.01% |
11,705
+9,825
| +523% | +$351K |
|
579
Under Armour Class C
UA
$2.09B
| $417K | ﹤0.01% |
48,932
-30,595
| -38% | -$261K |
|
580
Gerdau
GGB
$6.31B
| $415K | ﹤0.01% |
101,167
+959
| +1% | +$3.93K |
|
|
DX
581
Dynex Capital
DX
$1.68B
| $414K | ﹤0.01% |
34,223
+33,157
| +3,110% | +$401K |
|
582
Sweetgreen
SG
$1.03B
| $414K | ﹤0.01% |
52,861
+35,127
| +198% | +$275K |
|
583
Teledyne Technologies
TDY
$25.5B
| $413K | ﹤0.01% |
925
+459
| +98% | +$205K |
|
|
DADA
584
DELISTED
Dada Nexus
DADA
| $412K | ﹤0.01% |
48,750
+45,058
| +1,220% | +$381K |
|
585
Cabot Corp
CBT
$4.31B
| $411K | ﹤0.01% |
+5,366
| New | +$411K |
|
586
NETGEAR
NTGR
$817M
| $409K | ﹤0.01% |
22,122
+21,932
| +11,543% | +$405K |
|
587
Invesco KBW Bank ETF
KBWB
$4.92B
| $408K | ﹤0.01% |
9,738
+8,814
| +954% | +$369K |
|
588
Old National Bancorp
ONB
$8.96B
| $407K | ﹤0.01% |
28,292
+7,080
| +33% | +$102K |
|
589
Simplify Interest Rate Hedge ETF
PFIX
$146M
| $407K | ﹤0.01% |
+6,681
| New | +$407K |
|
590
Cal-Maine
CALM
$5.41B
| $406K | ﹤0.01% |
6,679
-10,784
| -62% | -$656K |
|
591
Amplify Energy
AMPY
$151M
| $405K | ﹤0.01% |
58,962
-5,971
| -9% | -$41K |
|
592
Digimarc
DMRC
$186M
| $405K | ﹤0.01% |
20,626
-27,026
| -57% | -$531K |
|
|
ESMT
593
DELISTED
EngageSmart, Inc.
ESMT
| $405K | ﹤0.01% |
21,049
+19,571
| +1,324% | +$377K |
|
594
Parker-Hannifin
PH
$95.7B
| $403K | ﹤0.01% |
+1,201
| New | +$403K |
|
595
Sigma Lithium
SGML
$647M
| $403K | ﹤0.01% |
10,737
+2,904
| +37% | +$109K |
|
596
monday.com
MNDY
$9.98B
| $400K | ﹤0.01% |
+2,806
| New | +$400K |
|
597
Aspen Aerogels
ASPN
$549M
| $399K | ﹤0.01% |
53,586
+36,667
| +217% | +$273K |
|
598
Costamare
CMRE
$1.47B
| $398K | ﹤0.01% |
42,356
-30,749
| -42% | -$289K |
|
599
Opendoor
OPEN
$4.5B
| $397K | ﹤0.01% |
226,087
+213,887
| +1,753% | +$376K |
|
600
Star Bulk Carriers
SBLK
$2.22B
| $396K | ﹤0.01% |
+18,783
| New | +$396K |
|