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 | |
|---|---|---|---|---|---|---|
3401
CALL
Grand Canyon Education
LOPE
$3.84B
| $236K | ﹤0.01% |
31
+17
| +121% | +$1.4K |
|
3402
PUT
MKS Inc
MKSI
$21.3B
| $236K | ﹤0.01% |
29
-10
| -26% | -$1.02K |
|
3403
PUT
Old Republic International
ORI
$10.5B
| $236K | ﹤0.01% |
155
+67
| +76% | +$1.38K |
|
3404
CALL
Rogers Corp
ROG
$2.31B
| $236K | ﹤0.01% |
25
+24
| +2,400% | +$2.73K |
|
3405
PUT
Usana Health Sciences
USNA
$412M
| $236K | ﹤0.01% |
41
+34
| +486% | +$2.37K |
|
3406
CALL
VirnetX Holding Corp
VHC
$51M
| $236K | ﹤0.01% |
22
+6
| +38% | +$569 |
|
3407
PUT
VICI Properties
VICI
$29.5B
| $236K | ﹤0.01% |
142
+116
| +446% | +$2.71K |
|
|
TCP
3408
CALL
DELISTED
TC Pipelines LP
TCP
| $236K | ﹤0.01% |
86
+23
| +37% | +$859 |
|
|
REGI
3409
DELISTED
Renewable Energy Group, Inc.
REGI
| $236K | ﹤0.01% |
11,537
-85,776
| -88% | -$2.17M |
|
3410
CALL
Badger Meter
BMI
$3.71B
| $235K | ﹤0.01% |
44
+41
| +1,367% | +$2.5K |
|
3411
PUT
Kimco Realty
KIM
$17.8B
| $235K | ﹤0.01% |
244
+182
| +294% | +$3.13K |
|
3412
PUT
Signet Jewelers
SIG
$3.72B
| $235K | ﹤0.01% |
365
-1,563
| -81% | -$32K |
|
3413
PUT
BOK Financial
BOKF
$8.58B
| $234K | ﹤0.01% |
55
+45
| +450% | +$3.17K |
|
3414
Cooper Companies
COO
$13.7B
| $234K | ﹤0.01% |
3,396
+1,460
| +75% | +$119K |
|
3415
PUT
Invesco
IVZ
$13.3B
| $234K | ﹤0.01% |
258
+102
| +65% | +$1.55K |
|
3416
Liberty Broadband Class C
LBRDK
$4.44B
| $234K | ﹤0.01% |
2,120
+2,036
| +2,424% | +$253K |
|
3417
CALL
ONE Gas
OGS
$5.02B
| $234K | ﹤0.01% |
28
+8
| +40% | +$708 |
|
3418
CALL
Qualys
QLYS
$4.75B
| $234K | ﹤0.01% |
27
+26
| +2,600% | +$2.18K |
|
|
SNV
3419
DELISTED
Synovus
SNV
| $234K | ﹤0.01% |
+13,346
| New | +$411K |
|
3420
CALL
Targa Resources
TRGP
$57.4B
| $234K | ﹤0.01% |
340
-606
| -64% | -$18K |
|
3421
CALL
Zymeworks
ZYME
$1.69B
| $234K | ﹤0.01% |
66
+54
| +450% | +$2.21K |
|
|
NETI
3422
PUT
DELISTED
Eneti Inc.
NETI
| $234K | ﹤0.01% |
+123
| New | +$4.55K |
|
3423
AngloGold Ashanti
AU
$40.7B
| $233K | ﹤0.01% |
+14,058
| New | +$276K |
|
3424
PUT
Manchester United
MANU
$3.96B
| $233K | ﹤0.01% |
155
+125
| +417% | +$2.23K |
|
3425
PetMed Express
PETS
$42.1M
| $233K | ﹤0.01% |
8,106
+7,471
| +1,177% | +$196K |
|
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.