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 | |
|---|---|---|---|---|---|---|
351
Clearwater Paper
CLW
$354M
| $730K | ﹤0.01% |
20,227
+12,422
| +159% | +$448K |
|
352
Nokia
NOK
$24.5B
| $730K | ﹤0.01% |
166,036
-230,949
| -58% | -$1.02M |
|
353
United States Gasoline Fund
UGA
$76.5M
| $726K | ﹤0.01% |
38,356
+30,727
| +403% | +$582K |
|
|
MDP
354
DELISTED
Meredith Corporation
MDP
| $724K | ﹤0.01% |
49,818
+41,045
| +468% | +$597K |
|
355
Ares Capital
ARCC
$15.8B
| $715K | ﹤0.01% |
49,527
-13,940
| -22% | -$201K |
|
356
Kohl's
KSS
$1.86B
| $715K | ﹤0.01% |
34,450
+16,853
| +96% | +$350K |
|
357
Sibanye-Stillwater
SBSW
$6.08B
| $709K | ﹤0.01% |
82,049
+40,131
| +96% | +$347K |
|
358
Nektar Therapeutics
NKTR
$764M
| $706K | ﹤0.01% |
2,035
-476
| -19% | -$165K |
|
359
Progress Software
PRGS
$1.88B
| $704K | ﹤0.01% |
+18,179
| New | +$704K |
|
|
STAY
360
DELISTED
Extended Stay America, Inc. Paired Share Unit
STAY
| $701K | ﹤0.01% |
62,646
+35,497
| +131% | +$397K |
|
361
Thermo Fisher Scientific
TMO
$186B
| $697K | ﹤0.01% |
1,924
-8,228
| -81% | -$2.98M |
|
362
Dow Inc
DOW
$17.4B
| $696K | ﹤0.01% |
+17,082
| New | +$696K |
|
363
Ironwood Pharmaceuticals
IRWD
$188M
| $696K | ﹤0.01% |
67,506
+45,921
| +213% | +$473K |
|
364
Chegg
CHGG
$185M
| $695K | ﹤0.01% |
+10,336
| New | +$695K |
|
365
iShares Core S&P 500 ETF
IVV
$664B
| $694K | ﹤0.01% |
+2,241
| New | +$694K |
|
366
CBRE Group
CBRE
$48.9B
| $691K | ﹤0.01% |
+15,281
| New | +$691K |
|
367
Roku
ROKU
$14B
| $691K | ﹤0.01% |
5,930
-4,303
| -42% | -$501K |
|
368
Syndax Pharmaceuticals
SNDX
$1.47B
| $691K | ﹤0.01% |
46,663
+26,617
| +133% | +$394K |
|
369
Bread Financial
BFH
$3.09B
| $690K | ﹤0.01% |
+19,176
| New | +$690K |
|
|
TECD
370
DELISTED
Tech Data Corp
TECD
| $690K | ﹤0.01% |
4,767
-613
| -11% | -$88.7K |
|
371
Omega Healthcare
OHI
$12.7B
| $685K | ﹤0.01% |
23,056
+18,404
| +396% | +$547K |
|
372
PBF Energy
PBF
$3.3B
| $685K | ﹤0.01% |
66,935
+6,163
| +10% | +$63.1K |
|
373
Caesarstone
CSTE
$48.7M
| $684K | ﹤0.01% |
57,736
+26,681
| +86% | +$316K |
|
374
United States 12 Month Oil Fund,
USL
$42.3M
| $684K | ﹤0.01% |
46,471
+46,071
| +11,518% | +$678K |
|
|
SINA
375
DELISTED
Sina Corp
SINA
| $683K | ﹤0.01% |
19,042
+14,270
| +299% | +$512K |
|