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 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
abrdn Physical Gold Shares ETF
SGOL
$5.78B
| $342K | ﹤0.01% |
19,997
+19,822
| +11,327% | +$339K |
|
577
Amplify Junior Silver Miners ETF
SILJ
$2.09B
| $342K | ﹤0.01% |
28,475
+8,538
| +43% | +$103K |
|
578
Interactive Brokers
IBKR
$27.7B
| $341K | ﹤0.01% |
32,728
+3,688
| +13% | +$38.4K |
|
579
Palomar
PLMR
$3.24B
| $341K | ﹤0.01% |
+3,978
| New | +$341K |
|
580
HubSpot
HUBS
$26.5B
| $339K | ﹤0.01% |
1,512
-4,868
| -76% | -$1.09M |
|
581
AXIS Capital
AXS
$7.58B
| $338K | ﹤0.01% |
8,351
+8,121
| +3,531% | +$329K |
|
582
ScottsMiracle-Gro
SMG
$3.51B
| $338K | ﹤0.01% |
+2,518
| New | +$338K |
|
583
Newmark Group
NMRK
$3.3B
| $337K | ﹤0.01% |
69,464
-1,815
| -3% | -$8.81K |
|
584
ADMA Biologics
ADMA
$3.91B
| $335K | ﹤0.01% |
114,363
+87,615
| +328% | +$257K |
|
585
Amdocs
DOX
$9.43B
| $334K | ﹤0.01% |
+5,494
| New | +$334K |
|
586
Global X Lithium & Battery Tech ETF
LIT
$1.14B
| $332K | ﹤0.01% |
10,518
-54,178
| -84% | -$1.71M |
|
|
TGI
587
DELISTED
Triumph Group
TGI
| $332K | ﹤0.01% |
36,927
+34,773
| +1,614% | +$313K |
|
588
ProShares Ultra Financials
UYG
$871M
| $330K | ﹤0.01% |
11,364
+149
| +1% | +$4.33K |
|
|
CONN
589
DELISTED
Conn's Inc.
CONN
| $330K | ﹤0.01% |
32,747
-18,939
| -37% | -$191K |
|
|
SCPL
590
DELISTED
SciPlay Corporation Class A Common Stock
SCPL
| $330K | ﹤0.01% |
+22,317
| New | +$330K |
|
591
Co-Diagnostics
CODX
$12.1M
| $328K | ﹤0.01% |
16,952
+3,977
| +31% | +$77K |
|
592
Freshpet
FRPT
$2.78B
| $328K | ﹤0.01% |
+3,928
| New | +$328K |
|
593
Snap-on
SNA
$16.8B
| $328K | ﹤0.01% |
+2,375
| New | +$328K |
|
|
ECOL
594
DELISTED
US Ecology, Inc.
ECOL
| $326K | ﹤0.01% |
+9,629
| New | +$326K |
|
595
Protolabs
PRLB
$1.18B
| $325K | ﹤0.01% |
2,897
+1,177
| +68% | +$132K |
|
596
Carrier Global
CARR
$54B
| $324K | ﹤0.01% |
+14,619
| New | +$324K |
|
597
Annaly Capital Management
NLY
$14.3B
| $324K | ﹤0.01% |
+12,349
| New | +$324K |
|
598
Brookfield
BN
$99B
| $322K | ﹤0.01% |
+12,221
| New | +$322K |
|
599
Goodyear
GT
$2.45B
| $322K | ﹤0.01% |
36,027
-95,510
| -73% | -$854K |
|
600
IPG Photonics
IPGP
$3.46B
| $322K | ﹤0.01% |
+2,011
| New | +$322K |
|