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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CAVM
926
PUT
DELISTED
Cavium, Inc.
CAVM
| $183K | 0.01% |
178
+113
| +174% | +$6.52K |
|
927
Autohome
ATHM
$2.45B
| $182K | 0.01% |
6,522
-4,795
| -42% | -$126K |
|
928
CALL
Prudential Financial
PRU
$40.9B
| $182K | 0.01% |
800
+390
| +95% | +$27.2K |
|
929
SM Energy
SM
$8B
| $182K | 0.01% |
+9,761
| New | +$135K |
|
930
CALL
Texas Instruments
TXN
$259B
| $182K | 0.01% |
1,128
+729
| +183% | +$38.7K |
|
931
CALL
Corning
GLW
$135B
| $181K | 0.01% |
1,180
+1,002
| +563% | +$18.6K |
|
|
BXLT
932
CALL
DELISTED
BAXALTA INC COM STK (DE)
BXLT
| $181K | 0.01% |
1,427
+888
| +165% | +$35.1K |
|
933
Copa Holdings
CPA
$5.51B
| $180K | 0.01% |
+2,660
| New | +$149K |
|
934
PUT
Target
TGT
$61.1B
| $180K | 0.01% |
1,447
+394
| +37% | +$29.8K |
|
|
CPE
935
DELISTED
Callon Petroleum Company
CPE
| $180K | 0.01% |
2,043
+1,961
| +2,391% | +$136K |
|
|
IBKC
936
DELISTED
IBERIABANK Corp
IBKC
| $180K | 0.01% |
+3,522
| New | +$173K |
|
937
CALL
Eaton
ETN
$161B
| $179K | 0.01% |
725
+492
| +211% | +$27.2K |
|
938
CALL
First Solar
FSLR
$22B
| $179K | 0.01% |
451
-640
| -59% | -$42.9K |
|
939
CALL
GoPro
GPRO
$121M
| $179K | 0.01% |
4,963
+1,603
| +48% | +$19.9K |
|
940
Kennametal
KMT
$2.65B
| $179K | 0.01% |
7,987
+4,585
| +135% | +$89K |
|
941
CALL
Honeywell
HON
$77.7B
| $178K | 0.01% |
406
-164
| -29% | -$15.4K |
|
942
PUT
MGM Resorts International
MGM
$11.6B
| $178K | 0.01% |
518
-33
| -6% | -$652 |
|
|
LQ
943
DELISTED
La Quinta Holdings Inc.
LQ
| $178K | 0.01% |
14,247
+13,398
| +1,578% | +$152K |
|
|
ZLTQ
944
DELISTED
ZELTIQ Aesthetics, Inc.
ZLTQ
| $178K | 0.01% |
6,562
+5,112
| +353% | +$121K |
|
|
ROI
945
CALL
DELISTED
WISDOMTREE LARGECAP GROWTH FUND
ROI
| $178K | 0.01% |
1,035
+185
| +22% | +$31.8K |
|
946
CALL
Align Technology
ALGN
$12B
| $177K | 0.01% |
190
-85
| -31% | -$5.57K |
|
947
Alerian MLP ETF
AMLP
$13B
| $177K | 0.01% |
+3,256
| New | +$165K |
|
948
Brown-Forman Class B
BF.B
$11.7B
| $177K | 0.01% |
+5,625
| New | +$174K |
|
949
PUT
Zillow
Z
$6.76B
| $177K | 0.01% |
109
-315
| -74% | -$6.58K |
|
|
DPLO
950
DELISTED
DIPLOMAT PHARMACY, INC.
DPLO
| $177K | 0.01% |
6,473
-8,970
| -58% | -$264K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.