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 | |
|---|---|---|---|---|---|---|
|
ANSS
3226
DELISTED
Ansys
ANSS
| $275K | ﹤0.01% |
+1,185
| New | +$305K |
|
3227
PUT
Banco Macro
BMA
$5.83B
| $275K | ﹤0.01% |
162
-61
| -27% | -$1.75K |
|
3228
CALL
Designer Brands
DBI
$293M
| $275K | ﹤0.01% |
554
+325
| +142% | +$4.21K |
|
3229
PUT
Ooma
OOMA
$571M
| $275K | ﹤0.01% |
231
-18
| -7% | -$228 |
|
3230
CALL
Wave Life Sciences
WVE
$1.14B
| $275K | ﹤0.01% |
294
-233
| -44% | -$1.99K |
|
|
ZNGA
3231
PUT
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $275K | ﹤0.01% |
402
-717
| -64% | -$4.71K |
|
|
CY
3232
CALL
DELISTED
Cypress Semiconductor
CY
| $275K | ﹤0.01% |
118
-32
| -21% | -$732 |
|
3233
CALL
ARK Web x.0 ETF
ARKW
$1.64B
| $274K | ﹤0.01% |
62
+31
| +100% | +$1.89K |
|
|
ICAD
3234
CALL
DELISTED
iCAD Inc
ICAD
| $274K | ﹤0.01% |
374
+277
| +286% | +$2.7K |
|
|
NOAH
3235
PUT
Noah Holdings
NOAH
$591M
| $274K | ﹤0.01% |
106
+60
| +130% | +$1.89K |
|
|
PRVB
3236
CALL
DELISTED
Provention Bio, Inc. Common Stock
PRVB
| $274K | ﹤0.01% |
298
-570
| -66% | -$7.35K |
|
3237
PUT
National Grid
NGG
$81.7B
| $273K | ﹤0.01% |
53
-368
| -87% | -$20.3K |
|
|
ECHO
3238
EchoStar
ECHO
$25B
| $273K | ﹤0.01% |
8,560
-9,491
| -53% | -$355K |
|
3239
PUT
Banc of California
BANC
$3.22B
| $272K | ﹤0.01% |
341
+182
| +114% | +$2.67K |
|
3240
PUT
BridgeBio Pharma
BBIO
$16.5B
| $272K | ﹤0.01% |
+94
| New | +$2.92K |
|
3241
PUT
Nordic American Tanker
NAT
$1.36B
| $272K | ﹤0.01% |
601
+113
| +23% | +$407 |
|
3242
CALL
W.P. Carey
WPC
$17B
| $272K | ﹤0.01% |
48
+5
| +12% | +$379 |
|
|
HTZ
3243
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $272K | ﹤0.01% |
44,113
+35,355
| +404% | +$478K |
|
|
HI
3244
CALL
DELISTED
Hillenbrand
HI
| $271K | ﹤0.01% |
142
+134
| +1,675% | +$3.48K |
|
3245
Jefferies Financial Group
JEF
$12.8B
| $271K | ﹤0.01% |
+20,740
| New | +$396K |
|
|
HAPN
3246
PUT
Happen Inc
HAPN
$2.15B
| $271K | ﹤0.01% |
346
+222
| +179% | +$2.47K |
|
3247
CALL
Prothena Corp
PRTA
$455M
| $271K | ﹤0.01% |
254
+47
| +23% | +$569 |
|
3248
PUT
Compugen
CGEN
$224M
| $270K | ﹤0.01% |
373
+353
| +1,765% | +$2.77K |
|
3249
CALL
GrafTech
EAF
$203M
| $270K | ﹤0.01% |
33
+30
| +1,000% | +$2.89K |
|
3250
Fastenal
FAST
$54.3B
| $270K | ﹤0.01% |
17,326
-96,870
| -85% | -$1.71M |
|
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.