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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
851
Keurig Dr Pepper
KDP
$40.4B
| $367K | 0.02% |
+3,756
| New | +$350K |
|
852
CALL
Lowe's Companies
LOW
$113B
| $366K | 0.02% |
1,639
+202
| +14% | +$15.5K |
|
853
PUT
Pfizer
PFE
$143B
| $366K | 0.02% |
3,087
-632
| -17% | -$19.9K |
|
854
CALL
Williams Companies
WMB
$92B
| $366K | 0.02% |
2,288
-442
| -16% | -$12.8K |
|
|
B
855
PUT
Barrick Mining
B
$62.3B
| $365K | 0.02% |
3,190
-105
| -3% | -$1.94K |
|
856
PUT
TransDigm Group
TDG
$67.9B
| $364K | 0.02% |
589
+566
| +2,461% | +$135K |
|
|
WBA
857
CALL
DELISTED
Walgreens Boots Alliance
WBA
| $363K | 0.02% |
3,514
+2,694
| +329% | +$226K |
|
858
Ball Corp
BALL
$16.6B
| $361K | 0.02% |
+9,732
| New | +$363K |
|
859
MBIA
MBI
$293M
| $361K | 0.02% |
+42,683
| New | +$430K |
|
860
CALL
Olin
OLN
$2.69B
| $361K | 0.02% |
940
+416
| +79% | +$12.5K |
|
861
PUT
AbbVie
ABBV
$454B
| $360K | 0.02% |
2,231
+518
| +30% | +$32.6K |
|
862
CALL
Comcast
CMCSA
$78.3B
| $360K | 0.02% |
3,759
-131
| -3% | -$4.86K |
|
863
Hecla Mining
HL
$10.3B
| $360K | 0.02% |
68,127
+2,074
| +3% | +$12K |
|
864
McKesson
MCK
$96.5B
| $360K | 0.02% |
2,431
+578
| +31% | +$84.7K |
|
865
CALL
NetEase
NTES
$76.9B
| $360K | 0.02% |
1,735
+410
| +31% | +$22.1K |
|
866
Golar LNG
GLNG
$5.07B
| $359K | 0.02% |
12,866
-3,573
| -22% | -$95.5K |
|
867
PUT
JD.com
JD
$40.6B
| $359K | 0.02% |
2,185
+1,029
| +89% | +$30.3K |
|
868
PUT
Weibo
WB
$1.92B
| $359K | 0.02% |
1,810
+1,659
| +1,099% | +$82.5K |
|
869
PUT
United States Oil Fund
USO
$2.5B
| $358K | 0.02% |
604
-113
| -16% | -$10K |
|
|
ANDX
870
DELISTED
Andeavor Logistics LP
ANDX
| $358K | 0.02% |
+6,579
| New | +$365K |
|
|
COL
871
CALL
DELISTED
Rockwell Collins
COL
| $358K | 0.02% |
727
+515
| +243% | +$48.4K |
|
872
CALL
Zions Bancorporation
ZION
$10.1B
| $357K | 0.02% |
845
+426
| +102% | +$18.5K |
|
|
PVG
873
CALL
DELISTED
PRETIUM RESOURCES INC.
PVG
| $357K | 0.02% |
1,889
+712
| +60% | +$7.52K |
|
|
LTXB
874
DELISTED
LegacyTexas Financial Group Inc
LTXB
| $357K | 0.02% |
+8,948
| New | +$373K |
|
875
PUT
Capital One
COF
$123B
| $356K | 0.02% |
684
-658
| -49% | -$58.6K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.