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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1201
CALL
Alaska Air
ALK
$4.99B
| $2.24M | ﹤0.01% |
786
+484
| +160% | +$26.3K |
|
1202
PUT
W.W. Grainger
GWW
$64.6B
| $2.24M | ﹤0.01% |
90
-47
| -34% | -$13.9K |
|
1203
Teva Pharmaceuticals
TEVA
$36.3B
| $2.23M | ﹤0.01% |
+248,527
| New | +$2.55M |
|
1204
CALL
Neurocrine Biosciences
NBIX
$17.5B
| $2.22M | ﹤0.01% |
257
+170
| +195% | +$16.6K |
|
1205
CALL
Vistra
VST
$57B
| $2.22M | ﹤0.01% |
1,392
+458
| +49% | +$9.32K |
|
1206
PUT
Diamondback Energy
FANG
$57.8B
| $2.22M | ﹤0.01% |
847
+326
| +63% | +$20.5K |
|
1207
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.45B
| $2.21M | ﹤0.01% |
+67,331
| New | +$4.46M |
|
|
AVLR
1208
CALL
DELISTED
Avalara, Inc.
AVLR
| $2.21M | ﹤0.01% |
297
-21
| -7% | -$1.71K |
|
|
XIFR
1209
PUT
XPLR Infrastructure LP
XIFR
$1.18B
| $2.21M | ﹤0.01% |
515
+500
| +3,333% | +$26.5K |
|
1210
Yum! Brands
YUM
$40.6B
| $2.21M | ﹤0.01% |
+32,256
| New | +$3.01M |
|
1211
CALL
Ball Corp
BALL
$16.6B
| $2.2M | ﹤0.01% |
341
+177
| +108% | +$12.4K |
|
1212
DuPont de Nemours
DD
$18.6B
| $2.2M | ﹤0.01% |
51,481
+36,312
| +239% | +$2.22M |
|
1213
PUT
Bausch Health
BHC
$1.66B
| $2.2M | ﹤0.01% |
1,420
-408
| -22% | -$9.84K |
|
1214
PUT
Sarepta Therapeutics
SRPT
$1.68B
| $2.2M | ﹤0.01% |
225
-953
| -81% | -$109K |
|
1215
CALL
The Mosaic Company
MOS
$7.08B
| $2.2M | ﹤0.01% |
2,032
+764
| +60% | +$13K |
|
1216
CALL
DXC Technology
DXC
$1.5B
| $2.19M | ﹤0.01% |
1,680
+152
| +10% | +$4.02K |
|
1217
PUT
Vodafone
VOD
$35.1B
| $2.19M | ﹤0.01% |
1,592
+808
| +103% | +$14.4K |
|
1218
PUT
IQVIA
IQV
$34.6B
| $2.19M | ﹤0.01% |
+203
| New | +$29K |
|
1219
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14B
| $2.19M | ﹤0.01% |
40,191
+32,243
| +406% | +$1.96M |
|
|
TGR
1220
PUT
DELISTED
ISHARES TARGET DATE RETIREMENT INCOME ETF
TGR
| $2.19M | ﹤0.01% |
1,721
+1,254
| +269% | +$1.6M |
|
1221
CALL
Brookfield
BN
$101B
| $2.19M | ﹤0.01% |
1,385
+1,180
| +576% | +$24.3K |
|
1222
CALL
Corteva
CTVA
$59.4B
| $2.18M | ﹤0.01% |
929
+360
| +63% | +$9.9K |
|
|
XIFR
1223
XPLR Infrastructure LP
XIFR
$1.18B
| $2.18M | ﹤0.01% |
+50,769
| New | +$2.69M |
|
1224
Royal Caribbean
RCL
$76B
| $2.18M | ﹤0.01% |
+67,764
| New | +$6.19M |
|
1225
CALL
New Oriental
EDU
$7.85B
| $2.17M | ﹤0.01% |
201
+117
| +139% | +$15K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.