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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4376
PUT
PennantPark Floating Rate Capital
PFLT
$698M
| $145K | ﹤0.01% |
+173
| New | +$1.27K |
|
4377
PRA Group
PRAA
$672M
| $145K | ﹤0.01% |
3,756
+2,755
| +275% | +$87.4K |
|
4378
PUT
Unum
UNM
$13.4B
| $145K | ﹤0.01% |
88
+33
| +60% | +$521 |
|
4379
CALL
Viper Energy
VNOM
$8.43B
| $145K | ﹤0.01% |
140
-425
| -75% | -$4.08K |
|
|
WSR
4380
CALL
DELISTED
Whitestone REIT
WSR
| $145K | ﹤0.01% |
200
+120
| +150% | +$763 |
|
4381
CALL
Ziff Davis
ZD
$2B
| $145K | ﹤0.01% |
26
-22
| -46% | -$1.44K |
|
|
NBLX
4382
DELISTED
Noble Midstream Partners LP
NBLX
| $145K | ﹤0.01% |
17,156
+4,041
| +31% | +$29.6K |
|
|
ORBC
4383
CALL
DELISTED
ORBCOMM, Inc.
ORBC
| $145K | ﹤0.01% |
379
+329
| +658% | +$983 |
|
4384
AppFolio
APPF
$6.62B
| $144K | ﹤0.01% |
+889
| New | +$116K |
|
4385
PUT
Badger Meter
BMI
$3.87B
| $144K | ﹤0.01% |
23
-120
| -84% | -$7.12K |
|
4386
Century Aluminum
CENX
$4.22B
| $144K | ﹤0.01% |
20,250
+12,278
| +154% | +$64.9K |
|
4387
PUT
Cytosorbents Corp
CTSO
$22.2M
| $144K | ﹤0.01% |
146
-55
| -27% | -$505 |
|
4388
PUT
Evolent Health
EVH
$371M
| $144K | ﹤0.01% |
203
+192
| +1,745% | +$1.29K |
|
4389
CALL
Genworth Financial
GNW
$3.86B
| $144K | ﹤0.01% |
625
+187
| +43% | +$589 |
|
|
RDUS
4390
PUT
DELISTED
Radius Health, Inc.
RDUS
| $144K | ﹤0.01% |
106
-28
| -21% | -$386 |
|
|
MTOR
4391
CALL
DELISTED
MERITOR, Inc.
MTOR
| $144K | ﹤0.01% |
73
-27
| -27% | -$499 |
|
|
FLXN
4392
PUT
DELISTED
Flexion Therapeutics, Inc.
FLXN
| $144K | ﹤0.01% |
110
+33
| +43% | +$342 |
|
|
MCF
4393
PUT
DELISTED
Contango Oil & Gas Co.
MCF
| $144K | ﹤0.01% |
633
+493
| +352% | +$1.2K |
|
4394
CALL
Dana Inc
DAN
$2.88B
| $143K | ﹤0.01% |
118
-53
| -31% | -$576 |
|
4395
Icahn Enterprises
IEP
$5.1B
| $143K | ﹤0.01% |
2,953
-841
| -22% | -$41.3K |
|
4396
PUT
NiSource
NI
$21.5B
| $143K | ﹤0.01% |
63
-78
| -55% | -$1.88K |
|
4397
PUT
Tucows
TCX
$104M
| $143K | ﹤0.01% |
25
-47
| -65% | -$2.61K |
|
4398
PUT
Akebia Therapeutics
AKBA
$338M
| $142K | ﹤0.01% |
105
-232
| -69% | -$2.4K |
|
4399
PUT
BGC Group
BGC
$5.64B
| $142K | ﹤0.01% |
519
+466
| +879% | +$1.29K |
|
|
LAND
4400
PUT
Gladstone Land Corp
LAND
$365M
| $142K | ﹤0.01% |
90
+75
| +500% | +$1.05K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.