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 | |
|---|---|---|---|---|---|---|
3126
Alamos Gold
AGI
$12.5B
| $308K | ﹤0.01% |
61,757
+52,864
| +594% | +$311K |
|
3127
CALL
Compugen
CGEN
$224M
| $308K | ﹤0.01% |
425
+359
| +544% | +$2.82K |
|
3128
CALL
The Greenbrier Companies
GBX
$1.59B
| $308K | ﹤0.01% |
174
+71
| +69% | +$1.68K |
|
3129
Kinross Gold
KGC
$28.6B
| $308K | ﹤0.01% |
77,591
-34,666
| -31% | -$168K |
|
3130
PUT
TE Connectivity
TEL
$59.2B
| $308K | ﹤0.01% |
49
+43
| +717% | +$3.67K |
|
3131
CALL
TTEC Holdings
TTEC
$107M
| $308K | ﹤0.01% |
84
+69
| +460% | +$2.68K |
|
3132
CALL
LivePerson
LPSN
$20.3M
| $307K | ﹤0.01% |
9
+3
| +50% | +$1.46K |
|
3133
Intellia Therapeutics
NTLA
$1.52B
| $307K | ﹤0.01% |
+25,115
| New | +$338K |
|
3134
CALL
Mercury Systems
MRCY
$6.2B
| $306K | ﹤0.01% |
43
+25
| +139% | +$1.89K |
|
3135
Cerus
CERS
$617M
| $305K | ﹤0.01% |
65,635
+60,077
| +1,081% | +$272K |
|
3136
PUT
Essent Group
ESNT
$6.12B
| $305K | ﹤0.01% |
116
+72
| +164% | +$3.19K |
|
3137
CALL
Gogo Inc
GOGO
$533M
| $305K | ﹤0.01% |
1,442
+533
| +59% | +$2.28K |
|
3138
Old Dominion Freight Line
ODFL
$47.3B
| $305K | ﹤0.01% |
+4,650
| New | +$309K |
|
|
ARR
3139
PUT
Armour Residential REIT
ARR
$2.03B
| $304K | ﹤0.01% |
69
-15
| -18% | -$1.28K |
|
3140
PUT
Plug Power
PLUG
$2.9B
| $304K | ﹤0.01% |
861
-1,284
| -60% | -$5.23K |
|
3141
PUT
Murphy USA
MUSA
$11.2B
| $303K | ﹤0.01% |
36
+9
| +33% | +$934 |
|
3142
CALL
QuidelOrtho
QDEL
$1.18B
| $303K | ﹤0.01% |
+31
| New | +$2.51K |
|
|
JJG
3143
DELISTED
iPath Series B Bloomberg Grains Subindex Total ReturnSM ETN
JJG
| $303K | ﹤0.01% |
7,116
-1,204
| -14% | -$53.1K |
|
|
TCF
3144
CALL
DELISTED
TCF Financial Corporation Common Stock
TCF
| $303K | ﹤0.01% |
134
-38
| -22% | -$1.43K |
|
3145
CALL
American Eagle Outfitters
AEO
$2.95B
| $302K | ﹤0.01% |
381
-998
| -72% | -$12.7K |
|
3146
CALL
Brixmor Property Group
BRX
$9.99B
| $302K | ﹤0.01% |
318
+313
| +6,260% | +$5.61K |
|
3147
Newmark Group
NMRK
$2.85B
| $302K | ﹤0.01% |
71,279
+51,335
| +257% | +$503K |
|
3148
CALL
Omeros
OMER
$789M
| $302K | ﹤0.01% |
226
-229
| -50% | -$3.05K |
|
3149
PUT
Sabra Healthcare REIT
SBRA
$5.64B
| $302K | ﹤0.01% |
277
+124
| +81% | +$2.29K |
|
|
MRO
3150
CALL
DELISTED
Marathon Oil Corporation
MRO
| $302K | ﹤0.01% |
918
-165
| -15% | -$1.52K |
|
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.