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 | |
|---|---|---|---|---|---|---|
526
Hilltop Holdings
HTH
$2.22B
| $407K | ﹤0.01% |
22,099
-5,146
| -19% | -$94.8K |
|
527
Viatris
VTRS
$12.2B
| $407K | ﹤0.01% |
+25,326
| New | +$407K |
|
|
QIWI
528
DELISTED
QIWI PLC
QIWI
| $405K | ﹤0.01% |
23,409
-3,934
| -14% | -$68.1K |
|
529
Louisiana-Pacific
LPX
$6.9B
| $402K | ﹤0.01% |
+15,711
| New | +$402K |
|
530
The RealReal
REAL
$999M
| $402K | ﹤0.01% |
31,501
+7,299
| +30% | +$93.1K |
|
531
W.W. Grainger
GWW
$47.5B
| $400K | ﹤0.01% |
1,275
-1,998
| -61% | -$627K |
|
|
NAK
532
Northern Dynasty Minerals
NAK
$466M
| $400K | ﹤0.01% |
+279,903
| New | +$400K |
|
|
TBIO
533
DELISTED
Translate Bio, Inc. Common Stock
TBIO
| $399K | ﹤0.01% |
+22,287
| New | +$399K |
|
534
Citizens Financial Group
CFG
$22.3B
| $397K | ﹤0.01% |
15,757
+7,434
| +89% | +$187K |
|
535
Mercury Systems
MRCY
$4.13B
| $397K | ﹤0.01% |
5,051
+3,952
| +360% | +$311K |
|
|
DCP
536
DELISTED
DCP Midstream, LP
DCP
| $393K | ﹤0.01% |
34,845
-60,552
| -63% | -$683K |
|
537
SBA Communications
SBAC
$21.2B
| $390K | ﹤0.01% |
1,310
-1,935
| -60% | -$576K |
|
538
Jack in the Box
JACK
$386M
| $389K | ﹤0.01% |
+5,262
| New | +$389K |
|
539
TTM Technologies
TTMI
$4.93B
| $388K | ﹤0.01% |
32,774
+30,121
| +1,135% | +$357K |
|
|
RSX
540
DELISTED
VanEck Russia ETF
RSX
| $387K | ﹤0.01% |
+18,653
| New | +$387K |
|
541
First American
FAF
$6.83B
| $386K | ﹤0.01% |
+8,054
| New | +$386K |
|
542
National Beverage
FIZZ
$3.75B
| $384K | ﹤0.01% |
+12,618
| New | +$384K |
|
543
Howmet Aerospace
HWM
$71.8B
| $382K | ﹤0.01% |
+24,149
| New | +$382K |
|
544
Direxion Daily Gold Miners Index Bear 2X Shares
DUST
$62.9M
| $380K | ﹤0.01% |
+1,530
| New | +$380K |
|
545
Veeco
VECO
$1.47B
| $374K | ﹤0.01% |
+27,762
| New | +$374K |
|
546
CRISPR Therapeutics
CRSP
$4.99B
| $373K | ﹤0.01% |
5,082
+4,991
| +5,485% | +$366K |
|
547
United Parks & Resorts
PRKS
$2.99B
| $373K | ﹤0.01% |
25,215
-42,220
| -63% | -$625K |
|
|
LMNX
548
DELISTED
Luminex Corp
LMNX
| $373K | ﹤0.01% |
11,497
+5,561
| +94% | +$180K |
|
549
Karyopharm Therapeutics
KPTI
$57.2M
| $372K | ﹤0.01% |
+1,313
| New | +$372K |
|
|
RP
550
DELISTED
RealPage, Inc.
RP
| $372K | ﹤0.01% |
5,733
-9,603
| -63% | -$623K |
|