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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
601
ProPetro Holding
PUMP
$505M
| $826K | ﹤0.01% |
102,082
-28,025
| -22% | -$227K |
|
602
SPDR S&P Insurance ETF
KIE
$815M
| $824K | ﹤0.01% |
+20,426
| New | +$824K |
|
603
Paysafe
PSFE
$820M
| $823K | ﹤0.01% |
17,545
+16,015
| +1,047% | +$751K |
|
|
RBAC
604
DELISTED
RedBall Acquisition Corp.
RBAC
| $823K | ﹤0.01% |
+83,055
| New | +$823K |
|
605
Trane Technologies
TT
$92.9B
| $812K | ﹤0.01% |
+4,023
| New | +$812K |
|
606
NovoCure
NVCR
$1.37B
| $811K | ﹤0.01% |
10,807
+1,475
| +16% | +$111K |
|
607
Invesco DB US Dollar Index Bearish Fund
UDN
$147M
| $811K | ﹤0.01% |
40,076
-798
| -2% | -$16.1K |
|
608
iShares 7-10 Year Treasury Bond ETF
IEF
$36.2B
| $810K | ﹤0.01% |
+7,047
| New | +$810K |
|
609
First Trust Health Care AlphaDEX Fund
FXH
$914M
| $808K | ﹤0.01% |
+6,513
| New | +$808K |
|
610
SSR Mining
SSRM
$4.46B
| $806K | ﹤0.01% |
45,571
-5,781
| -11% | -$102K |
|
611
iShares MSCI Hong Kong ETF
EWH
$728M
| $801K | ﹤0.01% |
+34,566
| New | +$801K |
|
612
BridgeBio Pharma
BBIO
$10.1B
| $797K | ﹤0.01% |
+47,810
| New | +$797K |
|
613
Invesco
IVZ
$9.88B
| $797K | ﹤0.01% |
+34,649
| New | +$797K |
|
614
Regions Financial
RF
$24.1B
| $796K | ﹤0.01% |
+36,538
| New | +$796K |
|
|
LGF.A
615
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $796K | ﹤0.01% |
+47,855
| New | +$796K |
|
616
FIVE9
FIVN
$1.95B
| $795K | ﹤0.01% |
+5,791
| New | +$795K |
|
617
Axsome Therapeutics
AXSM
$6.19B
| $790K | ﹤0.01% |
20,927
+10,592
| +102% | +$400K |
|
618
ATAI Life Sciences
ATAI
$1.01B
| $787K | ﹤0.01% |
+103,204
| New | +$787K |
|
619
Direxion Daily Regional Banks Bull 3X Shares
DPST
$718M
| $787K | ﹤0.01% |
1,585
+508
| +47% | +$252K |
|
620
iShares US Basic Materials ETF
IYM
$563M
| $787K | ﹤0.01% |
5,619
-3,592
| -39% | -$503K |
|
621
Arbutus Biopharma
ABUS
$886M
| $785K | ﹤0.01% |
201,963
+171,920
| +572% | +$668K |
|
622
Ameresco
AMRC
$1.48B
| $781K | ﹤0.01% |
+9,592
| New | +$781K |
|
|
DCP
623
DELISTED
DCP Midstream, LP
DCP
| $780K | ﹤0.01% |
+28,389
| New | +$780K |
|
624
Medical Properties Trust
MPW
$2.77B
| $778K | ﹤0.01% |
+32,946
| New | +$778K |
|
625
Qorvo
QRVO
$8.26B
| $778K | ﹤0.01% |
4,979
-12,459
| -71% | -$1.95M |
|