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 | |
|---|---|---|---|---|---|---|
2426
Upland Software
UPLD
$12M
| $587K | ﹤0.01% |
2,189
+235
| +12% | +$85K |
|
2427
CALL
Bloom Energy
BE
$52.6B
| $585K | ﹤0.01% |
1,119
+450
| +67% | +$3.82K |
|
2428
PUT
BorgWarner
BWA
$13.2B
| $584K | ﹤0.01% |
273
-13
| -5% | -$376 |
|
2429
CALL
Editas Medicine
EDIT
$399M
| $584K | ﹤0.01% |
295
-261
| -47% | -$6.58K |
|
2430
PUT
United States Brent Oil Fund
BNO
$815M
| $583K | ﹤0.01% |
740
+735
| +14,700% | +$11.9K |
|
2431
CALL
PVH
PVH
$3.71B
| $583K | ﹤0.01% |
155
-55
| -26% | -$4.2K |
|
2432
Supernus Pharmaceuticals
SUPN
$2.68B
| $583K | ﹤0.01% |
32,425
-7,263
| -18% | -$153K |
|
2433
CALL
Darling Ingredients
DAR
$9.93B
| $582K | ﹤0.01% |
304
+150
| +97% | +$3.8K |
|
2434
PUT
Encompass Health
EHC
$11.2B
| $582K | ﹤0.01% |
114
-161
| -59% | -$9.28K |
|
|
GBT
2435
CALL
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $582K | ﹤0.01% |
114
-554
| -83% | -$37.1K |
|
2436
Casey's General Stores
CASY
$31.9B
| $580K | ﹤0.01% |
4,381
+1,793
| +69% | +$290K |
|
2437
CALL
Chemours
CC
$2.59B
| $580K | ﹤0.01% |
654
-333
| -34% | -$4.8K |
|
2438
CALL
Herbalife
HLF
$1.23B
| $580K | ﹤0.01% |
199
-428
| -68% | -$15.9K |
|
2439
PUT
Masco
MAS
$16B
| $580K | ﹤0.01% |
168
-168
| -50% | -$7.34K |
|
2440
PUT
ON Semiconductor
ON
$33.8B
| $580K | ﹤0.01% |
467
-1,324
| -74% | -$25.9K |
|
2441
PUT
TriNet
TNET
$2.84B
| $579K | ﹤0.01% |
154
-10
| -6% | -$521 |
|
|
EQM
2442
CALL
DELISTED
EQM Midstream Partners, LP
EQM
| $579K | ﹤0.01% |
491
+406
| +478% | +$8.27K |
|
2443
PUT
BlackLine
BL
$1.69B
| $578K | ﹤0.01% |
110
-5
| -4% | -$292 |
|
2444
PUT
Plains All American Pipeline
PAA
$17.4B
| $578K | ﹤0.01% |
1,096
+677
| +162% | +$9.29K |
|
2445
CALL
Tanger
SKT
$4.82B
| $578K | ﹤0.01% |
1,157
-103
| -8% | -$1.26K |
|
2446
BJs Wholesale Club
BJ
$11.9B
| $577K | ﹤0.01% |
+22,684
| New | +$510K |
|
2447
PUT
Smith & Nephew
SNN
$12.9B
| $577K | ﹤0.01% |
161
+160
| +16,000% | +$7.09K |
|
|
CMA
2448
DELISTED
Comerica
CMA
| $576K | ﹤0.01% |
+19,645
| New | +$1.07M |
|
|
SAFE
2449
CALL
Safehold
SAFE
$1.19B
| $575K | ﹤0.01% |
111
+97
| +693% | +$6.54K |
|
|
LGF.A
2450
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $575K | ﹤0.01% |
94,610
-53,033
| -36% | -$473K |
|
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.