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 | |
|---|---|---|---|---|---|---|
301
US Global Jets ETF
JETS
$839M
| $913K | ﹤0.01% |
54,874
+2,557
| +5% | +$42.5K |
|
302
HCA Healthcare
HCA
$98.5B
| $911K | ﹤0.01% |
9,395
+300
| +3% | +$29.1K |
|
303
Idexx Laboratories
IDXX
$51.4B
| $911K | ﹤0.01% |
+2,761
| New | +$911K |
|
304
JetBlue
JBLU
$1.85B
| $895K | ﹤0.01% |
82,125
-2,721
| -3% | -$29.7K |
|
|
ATH
305
DELISTED
Athene Holding Ltd. Class A Common Shares
ATH
| $892K | ﹤0.01% |
28,630
-52,827
| -65% | -$1.65M |
|
|
VMW
306
DELISTED
VMware, Inc
VMW
| $889K | ﹤0.01% |
5,741
-75,688
| -93% | -$11.7M |
|
|
HIBB
307
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $889K | ﹤0.01% |
+42,494
| New | +$889K |
|
308
Melco Resorts & Entertainment
MLCO
$3.8B
| $888K | ﹤0.01% |
57,268
+19,962
| +54% | +$310K |
|
|
NOAH
309
Noah Holdings
NOAH
$797M
| $885K | ﹤0.01% |
34,774
+34,302
| +7,267% | +$873K |
|
310
Vanguard FTSE Europe ETF
VGK
$26.9B
| $881K | ﹤0.01% |
+17,512
| New | +$881K |
|
311
DXC Technology
DXC
$2.65B
| $869K | ﹤0.01% |
52,673
+52,432
| +21,756% | +$865K |
|
312
iShares US Transportation ETF
IYT
$605M
| $868K | ﹤0.01% |
21,364
-45,168
| -68% | -$1.84M |
|
313
Globus Medical
GMED
$8.18B
| $866K | ﹤0.01% |
18,152
-5,567
| -23% | -$266K |
|
314
Global X Silver Miners ETF NEW
SIL
$2.92B
| $857K | ﹤0.01% |
+23,157
| New | +$857K |
|
315
Stride
LRN
$7.01B
| $852K | ﹤0.01% |
31,279
+817
| +3% | +$22.3K |
|
|
ZNGA
316
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $848K | ﹤0.01% |
+88,902
| New | +$848K |
|
317
Healthpeak Properties
DOC
$12.8B
| $843K | ﹤0.01% |
+30,597
| New | +$843K |
|
318
ProShares Ultra Silver
AGQ
$894M
| $833K | ﹤0.01% |
28,421
+19,444
| +217% | +$570K |
|
319
Equinix
EQIX
$75.7B
| $830K | ﹤0.01% |
1,182
-3,594
| -75% | -$2.52M |
|
|
AZPN
320
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $829K | ﹤0.01% |
8,005
+2,259
| +39% | +$234K |
|
321
iShares MSCI Hong Kong ETF
EWH
$712M
| $828K | ﹤0.01% |
38,753
-30,276
| -44% | -$647K |
|
322
Liberty Global Class A
LBTYA
$4.05B
| $826K | ﹤0.01% |
37,809
-20,240
| -35% | -$442K |
|
323
Rio Tinto
RIO
$104B
| $826K | ﹤0.01% |
14,707
+6,099
| +71% | +$343K |
|
|
PFPT
324
DELISTED
Proofpoint, Inc.
PFPT
| $823K | ﹤0.01% |
+7,412
| New | +$823K |
|
325
EOG Resources
EOG
$64.4B
| $821K | ﹤0.01% |
16,208
-16,432
| -50% | -$832K |
|