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 | |
|---|---|---|---|---|---|---|
1751
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $1.14M | ﹤0.01% |
626
-464
| -43% | -$4.53K |
|
1752
PUT
Alcon
ALC
$33.1B
| $1.14M | ﹤0.01% |
224
+161
| +256% | +$9.26K |
|
1753
PUT
Hexcel
HXL
$8.32B
| $1.14M | ﹤0.01% |
306
+304
| +15,200% | +$19.6K |
|
|
BLD
1754
DELISTED
TopBuild
BLD
| $1.14M | ﹤0.01% |
15,862
+14,671
| +1,232% | +$1.5M |
|
1755
CALL
PennyMac Financial
PFSI
$4.38B
| $1.14M | ﹤0.01% |
514
+255
| +98% | +$8.21K |
|
1756
iShares US Aerospace & Defense ETF
ITA
$14.2B
| $1.14M | ﹤0.01% |
15,782
+13,024
| +472% | +$1.33M |
|
1757
CALL
CareTrust REIT
CTRE
$10.2B
| $1.13M | ﹤0.01% |
767
+750
| +4,412% | +$14.9K |
|
1758
CALL
Guidewire Software
GWRE
$11.5B
| $1.13M | ﹤0.01% |
143
+87
| +155% | +$9.09K |
|
|
NVRO
1759
CALL
DELISTED
NEVRO CORP.
NVRO
| $1.13M | ﹤0.01% |
113
-538
| -83% | -$64.7K |
|
1760
PUT
Wyndham Hotels & Resorts
WH
$5.5B
| $1.13M | ﹤0.01% |
358
+271
| +311% | +$13.8K |
|
|
FLG
1761
PUT
Flagstar Bank National Association
FLG
$5.77B
| $1.13M | ﹤0.01% |
401
-82
| -17% | -$2.73K |
|
|
HEP
1762
PUT
DELISTED
Holly Energy Partners, L.P.
HEP
| $1.13M | ﹤0.01% |
804
-297
| -27% | -$5.95K |
|
1763
iShares Gold Trust
IAU
$63B
| $1.13M | ﹤0.01% |
37,413
+34,095
| +1,028% | +$1.03M |
|
|
ZNGA
1764
CALL
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $1.13M | ﹤0.01% |
1,646
+1,341
| +440% | +$8.81K |
|
|
WUBA
1765
PUT
DELISTED
58.com Inc
WUBA
| $1.13M | ﹤0.01% |
231
+41
| +22% | +$2.36K |
|
1766
CALL
Pembina Pipeline
PBA
$29.9B
| $1.12M | ﹤0.01% |
598
+530
| +779% | +$17.4K |
|
1767
PUT
Aflac
AFL
$63.9B
| $1.12M | ﹤0.01% |
328
-733
| -69% | -$33.5K |
|
1768
Shake Shack
SHAK
$2.3B
| $1.12M | ﹤0.01% |
29,772
+5,265
| +21% | +$312K |
|
|
MPT
1769
CALL
Medical Properties Trust
MPT
$2.89B
| $1.12M | ﹤0.01% |
649
+448
| +223% | +$9.37K |
|
1770
CALL
Schrodinger
SDGR
$1.12B
| $1.12M | ﹤0.01% |
+260
| New | +$9.82K |
|
|
NATI
1771
CALL
DELISTED
National Instruments Corp
NATI
| $1.12M | ﹤0.01% |
+339
| New | +$13.5K |
|
|
MIC
1772
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
| $1.12M | ﹤0.01% |
44,325
+26,883
| +154% | +$1.03M |
|
1773
CALL
Ingredion
INGR
$6.38B
| $1.12M | ﹤0.01% |
148
+34
| +30% | +$2.92K |
|
1774
PUT
Stellantis
STLA
$16.5B
| $1.12M | ﹤0.01% |
1,554
-517
| -25% | -$6.13K |
|
|
PBCT
1775
PUT
DELISTED
People's United Financial Inc
PBCT
| $1.12M | ﹤0.01% |
1,011
+963
| +2,006% | +$14.3K |
|
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.