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 | |
|---|---|---|---|---|---|---|
1301
PPG Industries
PPG
$25.4B
| $1.93M | ﹤0.01% |
23,105
+7,771
| +51% | +$863K |
|
1302
CALL
AeroVironment
AVAV
$8.03B
| $1.93M | ﹤0.01% |
316
+265
| +520% | +$16.6K |
|
1303
PUT
Corning
GLW
$134B
| $1.93M | ﹤0.01% |
938
-777
| -45% | -$20.3K |
|
1304
PUT
Unilever
UL
$130B
| $1.93M | ﹤0.01% |
339
+88
| +35% | +$5.52K |
|
1305
CALL
Safety Insurance
SAFT
$1.07B
| $1.93M | ﹤0.01% |
228
+181
| +385% | +$15.8K |
|
1306
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$707M
| $1.92M | ﹤0.01% |
637
-420
| -40% | -$13.9K |
|
1307
CALL
Teck Resources
TECK
$29.4B
| $1.92M | ﹤0.01% |
2,543
+1,793
| +239% | +$21.5K |
|
1308
Edwards Lifesciences
EW
$48.3B
| $1.92M | ﹤0.01% |
30,471
+26,946
| +764% | +$1.94M |
|
1309
UnitedHealth
UNH
$385B
| $1.92M | ﹤0.01% |
+7,683
| New | +$2.11M |
|
1310
CALL
Keurig Dr Pepper
KDP
$40.4B
| $1.91M | ﹤0.01% |
788
-110
| -12% | -$2.97K |
|
|
SPR
1311
CALL
DELISTED
Spirit AeroSystems
SPR
| $1.91M | ﹤0.01% |
799
+714
| +840% | +$39.5K |
|
1312
PUT
Waters Corp
WAT
$37.5B
| $1.91M | ﹤0.01% |
105
+91
| +650% | +$19.2K |
|
1313
PUT
PC Connection
CNXN
$2.02B
| $1.91M | ﹤0.01% |
463
+461
| +23,050% | +$20.4K |
|
1314
Sun Communities
SUI
$14.8B
| $1.91M | ﹤0.01% |
15,275
+13,971
| +1,071% | +$2.11M |
|
1315
Dollar General
DG
$25.4B
| $1.9M | ﹤0.01% |
12,612
+5,400
| +75% | +$834K |
|
1316
L3Harris
LHX
$55.8B
| $1.9M | ﹤0.01% |
+10,573
| New | +$2.17M |
|
1317
CALL
Global Payments
GPN
$21.3B
| $1.9M | ﹤0.01% |
132
-49
| -27% | -$8.96K |
|
|
WWE
1318
PUT
DELISTED
World Wrestling Entertainment
WWE
| $1.9M | ﹤0.01% |
561
-9
| -2% | -$436 |
|
|
AZPN
1319
PUT
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $1.9M | ﹤0.01% |
200
-4
| -2% | -$38K |
|
1320
PUT
CRISPR Therapeutics
CRSP
$4.68B
| $1.9M | ﹤0.01% |
448
+66
| +17% | +$3.41K |
|
1321
PUT
AerCap
AER
$23.4B
| $1.89M | ﹤0.01% |
831
+361
| +77% | +$17.8K |
|
|
FTCH
1322
PUT
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $1.89M | ﹤0.01% |
2,394
+608
| +34% | +$6.57K |
|
1323
CALL
Canadian Natural Resources
CNQ
$98B
| $1.89M | ﹤0.01% |
2,849
+921
| +48% | +$11K |
|
1324
PUT
Regency Centers
REG
$14.9B
| $1.89M | ﹤0.01% |
492
-27
| -5% | -$1.55K |
|
1325
PUT
Middleby
MIDD
$5.93B
| $1.89M | ﹤0.01% |
332
+90
| +37% | +$8.82K |
|
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.